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A common cop-out in anime, manga and soap operas, when a series is based on Brother-Sister Incest, is to reveal towards the end, or explicitly state in the opening monologue, that they're Not Blood Siblings. Usually, for all intents and purposes, everyone acts like they are. Alternatively, it can be used to explain why everyone's okay with the relationship.
This can also be foreshadowing for such a relationship, as many shows usually wouldn't make a big deal about adopted children unless there was a Changeling Fantasy involved.
Sometimes this is a result of Bowdlerization, Media Watchdogs, and Executive Meddling, in that in the original series they were blood relations. It also comes up in Moe, for fans who, while probably not having siblings, still feel a bit too squicky about it. First Girl Wins can sometimes explain the prevalence of this trope.
This trope is often related to Flirty Stepsiblings and Little Sister Heroine. But not by blood, of course. Needless to say, these tropes tend to gross out anyone who actually has stepsiblings.
In older works, when sex shouldn't even be hinted in family friendly stories, main child characters are usually Conveniently Adopted Orphan. That way, the main male and female character don't have to be accounted as their actual parents. This situation does lead to a lot of confusion with readers. A boy and a girl are adopted by a family, therefore appear to be brother and sister, but still have a romance thing going on and jealousy when one of them has success with another love interest. Since the situation isn't always explicitly explained to readers this often leads to disturbing confusing ideas with the readers.
Anime & Manga[]
- In the hentai Another Lady Innocent (by none other than Satoshi Urushihara), the protagonist Faye insists on calling her personal maid Sophia Onee-sama (Big Sister), and her lower-class childhood friend/adoptive older brother John Onii-sama (Big Brother). John even that mentions she doesn't have to call them as such, but Faye is adamant. Sounds like she's got a bit of a sibling complex . . .
- Twin Angels, another hentai, has the demon Kama rape Mai in her twin sister's form but, technically, it's not Ai.
- All the fetish fuel, none of the guilt.
- Another hentai, Body Transfer (see a pattern?), has one girl rape another in the second girl's sister's body. The younger girl believes the elder to be her sister, and the body-snatcher plays into the ruse (and it is the sister's body), so for all intents and purposes they are siblings to the audience--but technically, they are not.
- Kiss X Sis is nothing BUT this! Add in the fact the girls are pretty perverted and you got yourself a lucky brother.
- Except that he seems to be the only one opposed to this.. at least at the start.
- Pristine example in Miyuki: The main character soon discovers that his stepsister Miyuki is not blood-related to him. She ignores it until the end of the manga when he proposes in the middle of her wedding to one of his best friends. She then breaks up the wedding, and they eventually get married.
- Bakuen Campus Guardress
- Marmalade Boy, although Yuu does find some circumstantial evidence suggesting that they are blood siblings, and quickly breaks up with Miki, gets the hell out of town, and leaves them both to suffer. They finally conclude that they still love each other and want to get married, but their parents reveal that no, it was just a misunderstanding.
- The original proposed ending would have found them as siblings after all. They would have broken up in that ending, and Miki/Ginta and Yuu/Meiko would have formed.
- Love Hina introduced the hitherto unmentioned Kanako, Keitaro's quasi-adopted sister. Ironically Keitaro is the only character who never rationalizes Kanako as being 'fair game', while Naru ends up taking his role of clumsy awkward relationship handler for a period of time because she does.
- Tetsuya and Jun from Great Mazinger were two orphans taken in by Kenzo Kabuto and were raised together. Technically they are adoptive siblings, but they are not related by blood at all, so no one bats one eyelash regarding their ongoing Belligerent Sexual Tension.
- In Hot Gimmick, Hatsumi is unaware for a large portion of the series that her brother Shinogu is adopted. Shinogu, however, is aware and even moves out of their family's apartment as part of a plan to make Hatsumi see him as more than a brother. His compassionate nature also arguably makes him a preferable match for Hatsumi, compared to her Jerkass boyfriend Ryoki. And in the novels, Hatsumi chooses HIM over Ryouki.
- In the first episode of the comedic Hentai series Nageki no Kenkou Yuurouji (distributed in North America under the title F 3 Frantic Frustrated And Female), main character Hiroe has a lot of sex with her older sister Mayaka, and as the episode ends it appears their mother Yayoi is about to join in. Starting with the second episode, though, recurring subtitles insist altogether-too-earnestly that Mayaka is actually a neighboring college student and Yayoi is in fact their landlady — so earnestly that the entire thing ends up with a wink-wink-nudge-nudge air.
- This has sometimes been blamed by fans on bowlderization, when in fact that's how the Japanese version goes.
- Similarly, the first episode of the hentai Sex Exchange features a character-voiced disclaimer saying, "There are two pairs of siblings in this show, but they're not related by blood."
- Yoake Mae Yori Ruriiro na has two sisters for the lead, neither of whom is his blood sister, and both of whom are haremettes in the game. (For the record, Sayaka is his cousin, and Mai was adopted).
- Likewise, in the anime Happy Lesson, Chitose's sisters aren't really related to him and are clearly invoking a Big Sister Instinct and Cool Big Sis, but this isn't milked for UST at all.
- Kyouya in Triangle Heart 3 ~sweet songs forever~ has Miyuki (actually his paternal cousin, which permits her into the Unwanted Harem), as well as Nanoha (half-sister, and not a haremette, but clearly Lolicon bait for the fans). Nanoha's own series, which barely shows Kyouya instead of giving him a lead role, doesn't even mention this and instead choosing to briefly tease a potential relationship between Fate and her brother (by virtue of his mother adopting her) Chrono. Although this too was abandoned in the third season when Chrono married his childhood friend, Amy.
- Speaking of the third season, in Magical Girl Lyrical Nanoha StrikerS the hinted-at Puppy Love ship of Erio and Caro may sort of fit this in that Fate ends up being the legal guardian of both. The accompanying StrikerS manga has them repeatedly state that they are technically adopted siblings... while lathering on even more Ship Tease. Unlike other non-blood siblings, they had never met prior to StrikerS, and had no pre-existing sibling relationships (they even begin on a Last-Name Basis).
- Hiro and Karada in Asatte no Houkou; not taken to a romantic end, but still important to the plot.
- Has the heck spoofed out of it in Ninin ga Shinobuden (a.k.a. Ninja Nonsense), where one of the main characters, a yellow Pac-Man-esque anthropomorphic football who is really a Ninja Elder refers to this particular trope and, being a pervert, has a particular high esteem. "If the Master says there is a cute little non-blood related sister, there IS a non-blood related sister."
- A surprising number of Neon Genesis Evangelion fanfics claim that Rei was actually created by a composite of the DNA from a large number of people — which has the sole practical result of enabling the Rei/Shinji ship (as canonically it appears that Rei is a sort of clone of Shinji's mother Yui).
- Technically, they are half-siblings since their fathers aren't the same person. In fact, Rei doesn't have a father at all unless you count the (female) Lilith as one. Rebuild 2.0 heavily capitalizes on this: in a fade-in flashback, it is revealed that Rei is completely identical to Yui aside from albinism, hair and eye coloration - which are obvious traits from Lilith, if End of Evangelion is reliable in this regard. Shortly before that scene, Shinji even lampshades this by stating that Rei and Yui smell the same. Of course, her being a human-Angel hybrid makes their relationship both incest and Interspecies Romance. You Can Squick Now.
- Inverted in Revolutionary Girl Utena: when Nanami thinks that she and Touga aren't blood siblings, her world collapses. Turns out Touga is her brother. They were both adopted.
- Pointed out in the visual novel-based OVA _summer, where Osamu, the typical idiot best friend character, points out "Sana's technically your stepsister, so you could go for her if you want..." when looking over the many girls the protagonist has gathered around him.
- Kai and Saya from Blood Plus, where it is pretty obvious from early on in the series that Kai would hit that like the fist of an angry god. Nobody seems to find this at all strange.
- Well, when one considers that she was only "adopted" a couple years ago (ie after Kai had hit puberty) and looked like a teen girl already, it's not so strange.
- Code Geass played with this in one of its many Sound Episodes. Shirley goes through a series of Imagine Spots in which her attempts to ask Lelouch out go spectacularly wrong. In one of the imaginary sequences, his Ill Girl little sister Nunnally enters the scene and says that they'll be late for the wedding; as Shirley recoils in shock, the pair claim that they're Not Blood Siblings, so it's okay.
- Played with in Chapter 104 in the To Love Ru manga with Rito's younger sister, Mikan,"revealing" to Rito that she's not related to him by blood in an unexpected moment of sweetness. Of course, she was just doing it to mess with her older brother... or was she?
- And then revisited with a megaton-sized blast of Ship Tease in the entirety of chapter 157.
- In the manga Ani-Com by Yuu Yabuuchi (writer of Naisho No Tsubomi and other Shojo manga), this is the basis of the plot. It's played out that the remarrying parents expected their two children to get together and get married, and they do.
- Mahou Sensei Negima plays with this one in a rather subtle manner. Kotaro lives in Natsumi's room under the pretense of being her little brother. Guess who seems to be acting in a rather Tsundere fashion towards him lately?
- Decreasing in subtlety over time, unless you count the fact that the "little brother" ruse hasn't been mentioned for a long time. They're Happily Married in the Distant Finale.
- Completely inverted in Koi Kaze, where Koshiro and Nanoka develop an attraction for each other and then find out they are blood siblings who haven't seen each other in 10 years. The story revolves around how they cope — or not — with the fact that they can't get over their feelings for each other. In fact, Koi Kaze uses the documented phenomenon of "genetic sexual attraction" as a factor in Koshiro and Nanoka's interactions.
- Akane-Iro ni Somaru Saka hints at this with some Plot-Based Voice Cancellation, adding a considerable cop out factor to an already frustrating ending.
- Interesting variation in the manga Boku no Futatsu no Tsubasa when Hiromi gratuitously reminds Makoto (after a lot of quite incestuous behavior) that they aren't blood cousins, it foreshadows the reveal that Hiromi's adoptive mother is Makoto's biological mother, meaning they aren't blood sisters, either.
- In the Okazaki Tsuguo manga Justy, the titular character has two of this sort of sisters (the older one "adopted" him when she found him as a lone child, and then he "adopts" the younger after he kills her criminal ESPer father), and they both have crushes on him. Justy ends up romantically involved with the older one, Jerna. And he continues calling her "neesan," even when they're nude and postcoital in bed together.
- In one of the few non-romantic angles, in One Piece it is revealed that Ace and Luffy aren't biological brothers: Ace is actually the son of Gold Roger, and Garp took him in at Roger's request few before his execution. (And right on time, since Ace's mother Rouge fell victim to Death by Childbirth). Not that such things stop them from treating each other as true siblings, such as facing incredible risks to protect one another and Ace ultimately dying in an Heroic Sacrifice for Luffy
- The two have another "brother," Sabo, who was believed to have been killed by the Celestial Dragons while trying to go out to sea. He actually survived but was amnesiac for years, and only resurfaced several arc later.. According to Ace, sharing a drink makes people brothers.
- Like the above, Toshiro Hitsugaya and Momo Hinamori from Bleach aren't a romantic couple, but they were raised together and treat each other as actual siblings. Hitsugaya, however, is just a liiiiiittle bit overprotective of Hinamori, but that's an entirely different trope. And they're a rather popular couple anyway.
- Completely subverted in Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!! (* whew* ). Shuusuke is determined to treat Nao like a sister and nothing else, despite him totally having the hots for her. Nao, on the other hand, is actually slightly disappointed to find out that they're Not Blood Siblings, because it makes their attraction to each other less taboo.
- None of the Elmore kids in Psyren are blood-related. Probably why Fredrica and Marie is one of the most common pairings.
- Cherry Juice features a boy and girl of the same age becoming step siblings as young children, who eventually grow to have the hots for each other as teenagers. Their relationship is supported by both the girl's friends and her grandmother, who does everything she can to get the two together.
- The manga, Me and My Brothers, takes great pains to remind the reader nearly every chapter that the heroine is in fact not blood-related to the titular brothers, despite the also-incessant reminders that they are all family and that Sakura is their "little sister." This is used quite blatantly so Sakura can be obsessively fawned over by her new guardians--and eventually fall in love with one of them--without the squick.
- In ROD the TV Michelle, Maggie, and Anita are "sisters in law" rather than actual sisters, though this is more for plot reasons than pairing them together.
- The main plot of Akuma de Sourou; Takeru and Kayano's parents are engaged when they begin their relationship, so understandably
theyKayano goes to great lengths to keep it secret. Some people in universe accept it, and others don't. - Never stated outright in Axis Powers Hetalia, but the amount of Ship Tease between characters that aren't technically related by blood is astounding, as adoptive older brother figures tend to later become possible Love Interests (in fans' eyes, at least). Possible couples include: Switzerland and Liechtenstein, China and any of the Asians, any arrangement of England/France and America/Canada, possibly Spain and Romano... And because this universe is rather unclear about how exactly countries are "born," fans can and do decide whether or not certain couples are incest based on their preferences.
- Averted with Norway and Iceland - the latter's "DNA testing results" (archaeological excavation) prove that they are, in fact, related.
- Manga scenarist Shirodaira Kyou apparently loves playing with this.
- Played straight so far in Zetsuen No Tempest with Mahiro's Dead Little Sister.
- A variation in The Record of a Fallen Vampire: Akabara's adopted daughter fell in love with him, though he still sees her as his little girl. As a bonus, Akabara later married her half-sister.
- In Spiral, Ayumu is strongly hinted in the anime and confirmed in the manga to be in love with his sister-in-law. Inverted with Kousuke and Ryouko, who have blatant Ship Tease much before we learn (in the manga only) that they're actually half-siblings — but they've always known it, and though they've been raised apart, it has always been an obstacle to their relationship. (They eventually do make it to Official Couple status.)
- Mawaru Penguindrum has two instances of these:
- In episode 19, it is been revealed that Himari is not Kanba and Shouma's blood sister; she is actually a girl rescued from the child broiler and was adopted into Kanba and Shouma's family.
- In the next episode, this is also revealed Kanba is not really Shouma's blood brother as well. They were born in the same day, but Kanba and his birth father were kicked out of their rich family and Kanba was then adopted by the Takakuras, who had already adopted Himari.
- Then provides a surprise aversion: Kanba and Masako are Half-Identical Twins. Since Masako once kissed Kanba, it seems she's into Twincest. . .
- Vampire Game has Laphiji and Seilez, although, as Ishtar has said, the family's so inbred everyone's practically married to their siblings anyways.
- At one point in Fire Tripper, Suzuko falsely believes that she and Shukumaru are brother and sister by blood, which greatly distresses her. When she discovers that the two of them actually aren't blood-related AND who he actually is (Shuu, aka the younger boy that she was friends with in the present), she happily returns his affections and marries him.
- In Family Compo Masahiko has feelings for Shion, who acts as his sister and is referred to as so. But while Shion isn't his sister, she is his cousin.
- In UFO Ultramaiden Valkyrie the eight princesses of Valhalla aren't actually sisters, but are referred to as such due to tradition.
Comics[]
- In Elf Quest, it is hinted at in the comic, and expressly stated by the Word of God, that Cutter and Skywise have had sexual relationships. It is also mentioned in the comic that they are "brothers in all but blood." Of course, the elves are said to not have the same concept of relationship as (modern Western) humans do, even though nearly all of them are paired in "life bonds" (i.e. marriages).
- Mister Immortal from the Great Lakes Avengers learned he was immortal after his stepsister's death, which became Narmtastic after his repeated botched suicides.
- In X-Men comics, Nightcrawler's "true love" is his adoptive sister Amanda Sefton, even though they were raised together since infancy. They actually did officially get together, late in Excalibur's original run (and was portrayed as a bad idea - not because of their relationship, but because Amanda was portrayed as not-quite-right in the head). Nightcrawler (as Mystique's blood son) and Rogue (as her adopted daughter) have potential for this, as well. Which if it happened would be less potentially squicky than Amanda; they never even met until adulthood. He still flirts shamelessly with her.
- Back in early 1980s, DCU stories set on Earth-Two hinted at mutual attraction between the Huntress (Helena Wayne, Earth-Two Batman's daughter) and the local version of Dick Grayson. It pretty much remained subtext, with both parties insisting all too earnestly that even though they weren't biologically related, their relationship would be too wrong to even contemplate. That subtext inexplicably became text in the recent Justice Society of America Annual.
- One problem: The 1980s version was from the original Earth Two. After Crisis on Infinite Earths, that Universe ended. The whole point of the recent Annual was to show that the Earth 2 Power Girl was sucked into was NOT the same Earth 2 she came from.
- It is heavily implied that Despair II has an unrequited crush on her adoptive brother Destruction in volume 7 of The Sandman.
- This is a mantra for Thor/Loki or Balder/Loki fans, especially when Loki was in a female body.
- Happens not once but twice in Gerard Way's comic series The Umbrella Academy; first between the Rumor and Spaceboy, and then the Kracken's obvious unrequited feelings for Vanya, as well.
- In an early Alpha Flight story, it's strongly implied that Marrina's adopted brother was in love with her.
- Suske en Wiske: Suske and Wiske are both adopted by their aunt, Tante Sidonia, and thus raised as brother and sister. Still, many readers have had the impression that they actually WERE siblings. This caused a lot of disturbing scenes where Wiske is jealous of Suske's success with other girls and a case of Brother-Sister Incest appeared to be going on.
- Nero: Petoetje and Petatje are also adopted and raised as brother and sister by Madam Pheip.
Fan Works[]
- Way too much fanfiction and fanart tries to use this argument.
- Phineas and Ferb often fall into this; they're canonically stepbrothers, but refer to each other as brothers and have been raised together since they were toddlers. Slightly less commonly they'll be paired with their older sister (biological for Phineas, step- for Ferb) Candace.
- A fairly popular fan theory is that Doofenshmirtz is Phineas' biological father. Given that Ferb canonically has a crush on Doofenshmirtz's daughter Vanessa, some have noted the strangeness that Phineas' (step-)brother would be dating his (half-)sister, even though Ferb and Vanessa wouldn't be siblings by either blood or adoption.
- Drake and Josh.
- Dib and Gaz from Invader Zim are brother and sister, but Word of God hints that Dib may have been an experiment created by their scientist father (and, many fans guess, Gaz too). Some have argued this makes them a viable shipping pair. It's not a very popular ship, though.
- Derek and Casey of Life with Derek is a non-canon ship that's largely popular with the fanbase, as opposed to all the other love interests that are introduced throughout the series. The fact that half of the show focuses on the interactions and the relationship between the two step-siblings doesn't help.
- As a sort of Beta Fan-Preferred Couple of sorts, there's also Edwin and Lizzie, the younger siblings of Derek and Casey respectively. Doesn't help that both sometimes use the closet as a meeting place, which immediately has shippers thinking of the Ten Minutes in the Closet trope.
- Many Chronicles of Narnia fans use this excuse in Edmund/Lucy and Peter/Susan stories.
- Even though Bionicle is supposed to be a No Hugging, No Kissing universe, (any romantic subtexts in the movies are discontinuities) there's a good deal of romance in Fan Fiction. A lot of it is between members of the same team who call each other "brother" and "sister." Not as squicky when you realize that the entire cast is made of mostly machine cyborgs and that "brother" is more a title of endearment than anything.
- In the Gender Flip-based John Lane fanfic series, this happens in a more justified situation — After Helen learns how totally neglectful John's parents (Trope Namers of Casa Lane Parenting) are, she takes them to court and takes custody of John Lane, who at that point is already in a budding relationship with Daria.
- Rebuild of Evangelion: Mari tries to use this argument with Uri in Nobody Dies; he shoots her down regardless, still squicked by the prospect.
- In one Naruto fan comic, Temari discovers her father's secret papers, which prove that she was actually adopted, and doesn't have to hide her feelings for her younger brother Gaara any longer. Kankuro then wonders if he can do the same for Gaara, but Temari beats him up while reminding him that he and Gaara are still related, since she's the one who was adopted.
- Oneiroi Series: Terentius briefly tries to use this rationale to excuse himself from wanting his adopted half-sister, but he quickly breaks down, admitting to himself that it really doesn't matter and that he was lusting after his little sister.
- Subverted in Relationships Series. When it comes to light that Nove and Ginga, who are in a three-way relationship with each other and Wendi, are genetically related, this revelation motivates Genya's decision to send Ginga on a mission to separate her from Nove and Wendi.
- In Legolas By Laura, the eponymous elf adopts the heroine Laura as either his sister or his daughter (it's not really made clear). After rescuing her from orcs, he agrees to "be your boyfriend," even though she's both his adopted sister and ten years old.
- The Star Wars fanfic "Father and Son" has Han and Leia as a couple (as in canon)... despite the fact that her (and Luke's) birth parents adopted and raised Han for several years before the twins were born. Somehow, nobody (not even Vader or Padme's extended family on Naboo) sees anything wrong with the two being a couple. (Admittedly, all three siblings were sent to separate planets after Anakin's Face Heel Turn and Padme's Death by Childbirth, and didn't find out about their being siblings until after they were all adults. But still.)
- Most Shadow the Hedgehog/Maria Robotnik fanfiction downplays the Like Brother and Sister aspects their relationship may or may not have had.
- Franziska/Edgeworth shippers in the Ace Attorney fandom subscribe to this.
- This trope has been many an excuse for romantic or sexual Brady Bunch fanfiction, usually about the eldest siblings Greg and Marcia.
Films[]
- A very clumsy Western example: Ator The Fighting Eagle (the first Ator film; Mystery Science Theater 3000 fans might be more familiar with its sequel Cave Dwellers). Ator, the titular swordsman, falls in love with what he thinks is his blood sister and when he asks their father permission to marry her, the father happily reveals that he is in fact, adopted. (Instead of, you know, being totally squicked out by the idea that he would love his blood sister in the first place).
- Richie and Margot in The Royal Tenenbaums are a somewhat more realistic treatment, as their relationship is considered inappropriate despite everyone knowing that Margot is adopted.
- We mean everybody. Royal introduces her to everybody he knows as "my adopted daughter, Margot Tenenbaum."
- Clueless, where Cher realized at the end of the movie that she had been unconsciously harboring feelings for her former stepbrother. (Their parents were already divorced by this point).
- In Cruel Intentions the main character Sebastian is obsessed with his step-sister Kathryn, who uses the promise of sex to get him to help her with her revenge.
- This was brutally parodied in Not Another Teen Movie when their Kathryn expy constantly tries to seduce her brother.
Jake: That's disgusting. You're my sister! |
- The Wrong Box: Parodied in the Dudley Moore film: when the protagonist laments that cousins cannot marry, his love interest replies that she was adopted. After a moment's reflection, he responds: "Really? I was adopted too."
- Zhivago and Tonya, who end up married, in Doctor Zhivago.
- The Lion King has constant debates on how, if Scar and Mufasa are the lions of the pride, Nala is whose daughter exactly? Making her what relation to Simba?
- There's also debate on whether Shenzi, Banzai and Ed are related, partly for the purpose of writing fanfiction with the Shenzi/Banzai pairing and partly because it's one of those things it's fun to argue about.
- In The Lion King 2, isn't it so convenient that Kovu isn't really Scar's son, making it perfectly okay for him to get it on with his second cousin?
- The French movie The Flower Of Evil has a pair of stepsiblings who have had the hots for each other for years. Nobody really thinks this is squicky, in fact some of the family seem to wish they'd just get on with it.
- In Big Trouble, Matt Arnold and Jenny Herk's parents meet through each other, have sex, and eventually get married. Meanwhile, their relationship is somewhat implied to be a bit more than platonic.
Fairy Tales[]
- In "Princess Belle-Etoile", Princess Belle-Etoile is found with her two brothers and her cousin as a baby and they are all raised by the same couple. Princess Belle-Etoile and her cousin fall in love and find it very strange that she doesn't react to him the way she does to her brothers. Then, they learn they are foundlings and set out, and so find that they are only first cousins, and marry.
Literature[]
- Antigone and Haemon in Antigone.
- Frankenstein (1818). The same was true, but considerably more (sexually) explicit, in The Film of the Book, Mary Shelley's Frankenstein.
- At least kind of; Elizabeth was raised by Victor's parents, but there seems to have always been a kind of barrier between the two thinking of each other as siblings, probably because their family always wanted them to get together as adults. Note that they may be biological cousins depending on which edition you read.
- Heathcliff and Catherine Earnshaw in Wuthering Heights (1847), maybe. The book leaves it ambiguous as to whether or not Heathcliff is actually Mister Earnshaw's bastard son.
- Subverted in Dave Barry's novel Big Trouble. Matt and Jenny fall in love throughout the events of the book, but when their parents get together, they decide it's just too weird and break it off, but remain close friends.
- Played with in Augusten Burroughs' 'Sellevision' where two main characters fall in love and bang, then find out they are related but they're actually not... whew.
- Jim Butcher's The Dresden Files: Harry Dresden and his mysterious ex-girlfriend Elaine were adopted by their Evil Mentor when they were small children and raised as brother and sister. Once puberty struck, they took their relationship in the expected direction.
- Granted, "small children" here is about ten, at least in Harry's case, which is more than old enough to avoid feeling like brother and sister.
- Inverted in Orson Scott Card's Speaker for the Dead: Ender's speaking makes it public knowledge that Miro and Ouanda are, in fact, blood half-siblings. Given that the alternative was that Miro's dad's debilitating disease was profoundly different from every other case in recorded history in that it didn't start by obliterating his reproductive capabilities, you'd think somebody would have worked it out sooner, but the entire colony is profoundly Catholic and so the idea of his wife stepping out on him to have five or so kids just never crossed anyone's mind. It's pretty sad.
- Almost no one else knew about the disease until the man's death. His wife hid the records.
- Implied Septimus and Jenna from Septimus Heap.
- In the Lord John Gray spinoffs of Diana Gabaldon's Outlander series, the main character finds out that... fairly unfortunately, his new stepbrother was a guy he used to sleep with. It's awkward, but that apparently doesn't last long, and they're promptly back together. Which is OK, except for the fact that they're living in the 18th century and hence have the appropriate awkwardness. (There was Character Development in there somewhere, but it still managed to Squick some readers...).
- P. D. James's crime novel Death In Holy Orders featured a half-brother and sister who discovered each other's existence as adults and start a casual sexual relationship. The sister, in particular, behaves as if it's no big deal, and makes the excuse that it's not like they're full siblings. Of course.
- The Cullens in Stephenie Meyer's Twilight — though all the "children" met as adults, and weren't raised together.
- At the very end of Elizabeth Peters' book The Love Talker, main character Laurie learns that her brother was actually adopted. Based on some of his earlier actions, she concludes that he knows this and has romantic intentions toward her. She also immediately decides she likes the idea, saying something about how it's good to know, because she'd draw the line at Brother-Sister Incest.
- Another Elizabeth Peters' example comes from her Amelia Peabody series: Amelia's son Walter "Ramses" Emerson is attracted to his adopted sister Nefret pretty much from the moment he meets her, but it takes Nefret a long time to see Ramses as anything other than an Annoying Younger Sibling.
- This kind of thing may be a Signature Style in Tim Powers' novels.
- Expiration Date: there is a passing reference to the protagonist's twin sister trying to force him into bed.
- Last Call: the protagonist marries his foster-sister (at that point the full-fledged earthly representation of a syncretic moon goddess). Mythologically speaking, they can't really win the game (as it were) without marrying; the Squick factor is potentially mitigated (or greatly enhanced) by the fact that the protagonist was fifteen or sixteen when his sister was born and at the time of the novel hasn't seen her since she was a child.
- The Stress of Her Regard: after the death of his wife, the protagonist is Mistaken for Murderer by her Angsty Surviving Twin. She later comes to accept that he is innocent of the crime, and for years they work together (and pass for) brother and sister. When at a later point they have to pass as husband and wife, there are complications.
- The Dark Elf Trilogy: Wulfgar and Catti-brie, both humans and both adopted children of the dwarf king Bruenor Battlehammer, are not otherwise related. Which I guess means their relationship is okay. It doesn't last anyway.
- Odd subversion in the Firebringer Trilogy: When hero Jan's father Korr flies into a rage over Jan's marriage to the healer's daughter Tek, Jan doesn't understand, until he finds out that Tek's father was not the healer, but actually Korr. This in turn sends Jan into something of a Heroic BSOD, and when he sees Tek again and tells her what he has learned, they agree to renounce their marriage, believing themselves to be half siblings. Just before they actually do so, Jan's mother steps in and reveals that the pair aren't actually related by blood- Korr is not Jan's father after all.
- Both played straight and subverted in One Hundred Years of Solitude. Rebeca marries Jose Arcadio, as Rebeca technically isn't related to him, but their parents kick them out of the house anyway. The second example is a spoiler for the end: Amaranta Ursula (seventh generation) and Aureliano (the second) Babilonia get married under the pretense that they aren't related, but then Amaranta Ursula gives birth to a child with a pigs tail, he is eaten by ants, and Aureliano Babilonia realizes that Amaranta Ursula is his aunt. It Makes Sense in Context.
- Jack Harkaway, a popular Penny Dreadful hero, fell in love and eventually married his adopted sister. They had a kid together.
- There's a Mills&Boon medical romance called something like A Wife for the Baby Doctor where the eventual wife of the title is the hero's adopted sister.
- Doctor Zhivago: Zhivago and Tonya, as mentioned above, also hit it off in the book. Although Zhivago's eyes are set on someone else...
- Even though V. C. Andrews' works are best known for Brother-Sister Incest, it's actually more common for the heroine to end up with a man she initially believes is her brother/half-brother/cousin until it's revealed that they are not actually blood-related, making it fine for them to marry each other. The best example of this is the Cutler series where Dawn learns that she's actually adopted and that Jimmy is hence not really her brother; Jimmy even expresses his relief about this as he was attracted to Dawn even when he thought they were related. (And just to top this all off, Dawn's original boyfriend Philip turns out to be her actual brother who remains obsessed with her after the truth of their relations comes out to absolutely creepy levels. Got to love VC Andrews' wacky plots). Other examples are Heaven's daughter Annie and apparent half-brother Luke from the Casteel series, Melody and apparent cousin Cory from the Logan series (okay, it turns out they're still blood-related but only as second cousins, which makes marriage between them legal), and Rain and apparent brother Roy from the Hudson series (although they don't end up together, and there's that thing about Rain's own blood brother being attracted to her too - she doesn't end up with him either, thank goodness).
- In the Harper Connelly series written by Charlaine Harris, Harper develops romantic and sexual relationship with her stepbrother Tolliver that eventually leads to them becoming engaged, much to the shock of their relatives.
- Georgia and Shaun, from Mira Grant's Newsflesh Trilogy. Heavily implied in Feed, the first book, and confirmed in Deadline, the second.
- In Sabatini's Scaramouche, Andre-Louis and Aline are raised together, and Andre-Louis refers to her as a "sort of sister". They are completely in love.
- A Song of Ice and Fire has this a lot, mostly due to the Westerosi custom of fostering their children. Romances between foster-siblings aren't considered anything out of the ordinary and are often encouraged:
- Petyr Baelish played "kissing games" with both his foster-sisters, Catelyn and Lysa Tully. He eventually fought an (unsuccessful) duel for Catelyn's hand and later married Lysa.
- Tyrion Lannister invokes this deliberately by sending his 9-year-old niece Myrcella Baratheon to live with her fiance, 11-year-old Trystane Martell, years before they will be old enough to marry.
- Quentyn Martell mentions that there was a general expectation that he would marry his foster-sister, Gwynth Yronwood. He doesn't, but it would probably have been better for him if he had...
- Not quite a straight example, but Robert Baratheon was supposed to marry Lyanna Stark, who was the younger sister of Robert's foster-brother Ned.
- Another example can be found in Theon Greyjoy. Although they never interact in-series, he remarks several times that he'd hoped to marry his foster sister Sansa Stark, even though he knew it would never happen. Later, when he takes Winterfell, he thinks that, if she weren't in King's Landing, he might have forced her to marry him to secure his hold on the castle. Made somewhat squicky since, the last time he saw her, he was nineteen and she was eleven, and she's only two years older now.
Live Action TV[]
- Arrested Development — Subverted for all it's worth. Cousins George Michael and Maeby are attracted to each other and George Michael clings to any hope that Maeby isn't his Aunt Lindsay's daughter. When they find out that there's a chance she's been adopted, they go to second base... then they find out that she is Lindsay's daughter. As a result, Maeby begins dating a boy from school - Steve Holt. Meanwhile, Steve decides to find the father he never knew, who turns out to be GOB, Maeby's uncle. As a result, they break up. Then Maeby's mother Lindsay turns out to be adopted. Lindsay promptly starts hitting on George Michael's father, who is completely freaked out after thinking she was his twin for 37 years.
- And then, "in a kneejerk act of revenge", Michael's brother GOB decides to hit on his adoptive sister Lindsay.
- Lampshaded with the in-series movie Les Cousins Dangereux, a stereotypical french movie about cousins in love. When it's finally re-made for American audiences, the narrator explains that "the studio [...] had hoped to avoid controversy by artlessly explaining that the two leads were not biological cousins" but it didn't stop the protesters from picketing the premiere.
- A callback joke has narrator Ron Howard remind the audience that George Michael and Maeby might not be actual cousins.
- Battlestar Galactica (2003) — Kara Thrace and Lee Adama are not biologically related, but they consider the same person to be their father (Bill Adama) and Kara was engaged to Lee's dead brother. Their interactions wildly vary between very close, occasionally juvenile best friends and a highly-charged sexual relationship.
- Also any sexual relations between the seven models of humanoid Cylons, such as Boomer/Cavil and Caprica/D'Anna, as well as the failed attempts at Cylon breeding offscreen.
- The Bold and the Beautiful — A particularly squicky example on this Soap Opera. In 2003, Ridge discovered that his father was not Eric, but Massimo. Meaning his half-sister, Bridget, wasn't his sister. He told Bridget and they were kissing shortly thereafter. That's bad enough on its own, but consider their history. Ridge had been in a on-off relationship with her mother for 15 years at that point. He also helped Brooke deliver Bridget in Big Bear ten years ago. He and Brooke had an affair, so they all believed Ridge was Bridget's father until she was 4. She was even named Bridget after Ridge. So Ridge made out with a woman who he not only thought was his sister but also his daughter. Thankfully, any Ridge/Bridget pairing didn't get too far.
- The Brady Bunch — Despite the number of possible pairings and the age of the oldest kids when their (step) parents first met, not just subverted but entirely avoided. It is, however, constantly mentioned in any parody of the show. It's also a subplot in the second Brady Bunch movie, when they think their parents didn't actually get married.
- In a weird Meta twist, nearly every actor on the show hooked up with one or more members of their TV family at one point or another.
- Brothers and Sisters — Justin and Rebecca. When they met they believed they were half-siblings, but when she did a paternity test it turned out that they weren't, and then they became a couple.
- Which, like the above Veronica Mars example, is a case of the familial relationship being changed in order to facilitate the romantic relationship. Unlike that one, however, the original plan was not to have them in a relationship, but the chemistry between the actors was so strong that it became impossible to not see them as a couple.
- CSI: Miami — Not avoided in one episode, where the father of a murdered woman's baby is discovered to be her brother: turns out they met and became step-siblings when their parents married (and the two kids were 18 at the time) and one thing led to another.
- Dark Angel — Max and the rest of her X5 unit consider each other siblings because they were "raised" together. Zack falls in love with Max, and it Squicks her out. She wasn't too sanguine about the idea of being breeding partners with Alec, a clone of her brother Ben, either.
- Days of Our Lives — Soap operas do this sometimes, particularly this one, where almost everybody is related to everyone else somehow (puzzling out the Brady/Horton/Kiriakis/DiMera family tree is so complicated that NBC even runs a commercial spot with star Ali Sweeney claiming she can't figure it out). Lately, Max Brady (adopted son of Caroline and Shawn, brother of Roman, Bo, Kayla, and Frankie) has dated two of his female nieces, Stephanie (daughter of Kayla) and Chelsea (daughter of Bo), and nobody has found this the slightest bit strange or squicky. Of such fine technicalities are the constantly-churning relationships of soap opera characters kept acceptable to the Moral Guardians.
- Dexter — Although Dexter and Deb are not in the least bit involved, there was an instance where when Deb got angry with Masuka for not inviting her to Dexter's bachelor party. He said that it was men only, unless she had wanted to be talent for the evening. Deb says that is gross as they're siblings, to which Masuka replies "not by blood." Dex just puts on his killing face in response.
- Turns out Dexter may actually be Harry's bastard son, which would make Dexter and Deb half-siblings
- No, Harry was just having an affair with Dexter's mom. Dexter's biological father, a bowler and ex-con, was confirmed through a DNA test in the first season.
- Deb also dated Dexter's biological brother, the Ice Truck Killer in the first season, although she was unaware of the connection at the time.
- Deb's own psychologist tries this excuse while suggesting that Debra's love for Dexter may be more than just sisterly.
- Eastenders — Dennis and Sharon.
- The Flash (2014 series) — Barry marries his adoptive sister Iris, but nobody in-universe treats it as though it's weird. However, critics have mentioned it since the couple became canon, even those who peripherally interact with the series, finding it strange. One noted moment is when Joe gives a toast at the wedding reception, saying how happy he is his son and daughter got married.
- Lost — Stepsiblings Boone and Shannon in the first season.
- Merlin — Arthur and Morgana. Morgana was raised as the ward of Arthur's father Uther. No expressed romantic interest on either side, but definite sparks.
- Then in "The Crystal Cave," it is revealed that they are blood siblings! Though technically, that's been an It Was His Sled for several hundred years now.
- Ninja Turtles: The Next Mutation — It was claimed that none of the turtles were actually related to each other; they just happened to be the same relative age in the same terrarium at the time. This was done so that, when a female turtle shows up later, there would be the potential for a relationship. Buuut, we don't talk about her...
- Passions — Perhaps the most sick and overly complicated example imaginable. Chad, who is biracial, comes to town and eventually dates Whitney the son of Eve and TC (the only black family in town). Chad is for several years hinted to be the son of Eve and her white lover Julian from before she was married. Later Chad and Whitney have a baby together and the revelation comes out that they are half-brother and half-sister and their baby was born from incest. Later is revealed that Chad is not really Eve and Julian's long lost son. It turns out Julian's father Alistair had raped Eve's adopted sister so yay Chad's son is not a product of incest but on the other hand Chad is a product of rape. Even later it is revealed that Chad is having a gay relationship on the down low with a guy named Vincent...who turns out to be Eve and Julian's hermaphroditic long lost child for realsies this time...oh and he's a serial killer and a rapist to boot. So yeah Chad didn't sleep with his half-sister...but he did sleep with his girlfriend's half-brother who was also his own half-nephew.
- Popular — Not canon, but this is the rationale people who 'ship Brooke and Sam together use. That and the fact that they were about 16 when their parents married.
- Pretty Little Liars — This is Jenna's justification for why it is not wrong for her and Toby to be lovers; when he doesn't accept that, she coerces him into her bed.
- Reaper — In the season two premiere, Sock, once he gets over the shock of a stranger living in his mother's house, instantly lusts after his hot Japanese stepsister whom he just met when they were both adults, and did not grow up together. The problem is, she just wants a genuine sibling relationship between them, and is completely oblivious to his attraction (until it gets really, really Anvilicious).
- Roseanne — Darlene and David's relationship didn't start this way, but it became more and more the case as the series went on. When David was "adopted" (taken in) by the Conners, Roseanne let him know he could move in by walking in on David and Darlene kissing and cheerfully crying to Dan "Oh, look, honey, our kids are necking!" By the time they got married, Jackie opened the episode by saying "I can't believe our little Darlene is marrying...our little David," Mark scolded David for asking about their birth parents when the Conners were practically his parents, and David and Darlene paid tribute to "our parents Dan and Roseanne Conner" in their wedding vows.
- Another episode centers on David being creeped out that he had an erotic dream about Roseanne because he thinks of her as his mother.
- The Sarah Connor Chronicles — As far as the rest of the world is concerned, Cameron is John's sister. The sexual tension, by the way, is palpable.
- Secret Life of the American Teenager — Adrian and her step brother Max.
- Six Feet Under — Nate has an affair with his newly introduced step-sister. Nate is neither squicked by this fact nor the fact that he's screwing around on his wife with someone he's known for less than a month. This, plus Nate's trope-naming Karmic Smackdown had Nate's portrayer, Peter Krause, not happy at all.
- Sixteen and Pregnant (and spin-off Teen Mom): A very strange example where couple Catelynn and Tyler are technically step-siblings, because Catelynn's mom April and Tyler's father Butch are married. Butch and April met and married after their childen started dating.
- Smallville featured an example on the alternate-universe Earth Two: Tess Mercer is having sex with her adopted brother, Clark Luthor. When you think about it, the boy was adopted, and the girl was never taken care of by her father. So even if both have Lex as a brother in one way, they are hardly siblings in any way.
- Step by Step — As with Brady Bunch, completely avoided in the '90s ABC sitcom. Though considering how... unBrady-like their relationships were amongst themselves, this is somewhat more understandable.
- That 70s Show — Subverted in an episode where Eric's hot cousin comes to visit and tells him she's adopted, and then seduces him just to trap him into making a move on her in front of his parents. She's not adopted at all; she just wanted to pay him back for a prank he pulled when they were younger.
- Subverted in the 2009 TVB drama Born Rich: The family's "long-lost" half-brother is actually dead and the "brother" that they have been interacting with is actually a twisted con man who stole the dead man's identity and wormed his way in. He develops a romantic obsession with his "sister" to the point that he rapes her. Needless to say, when she discovers the truth about her "brother"'s identity and his actions, her previously conflicted feelings turn into hatred and revenge.
- 3rdRockFromTheSun — Played With when the Solomons attend a family reunion pretending to be long-lost relatives. Tommy falls for one of the other guests, but she freaks out because he's supposedly her cousin. Harry, meanwhile, has been catching up on family gossip and reveals that she was adopted, which Tommy expects will fix things. It doesn't.
- Two and A Half Men — Charlie becomes sexually involved with the daughter of his mother's fiancé, repeatedly pointing out that she will only be his step-sister.
- Veronica Mars — In season 1, Veronica finds out that her mother and the father of her ex-boyfriend Duncan Kane were High School Sweethearts who may have continued their relationship as an extra-marital affair... meaning that she and Duncan may or may not be half-siblings. This revelation leads her to pull her car over and puke on the side of the road. Luckily, the paternity test that her father has done proves that she and Duncan aren't related. A few months later, they resume their relationship.
- Though according to Word of God, Duncan was SUPPOSED to be Veronica's half-brother for real, but the network wouldn't let them put Actually-Blood-Siblings sex on the air. So it was originally meant to be a complete (and squicky) subversion of the trope.
- Wonderfalls — After Mahandra and Aaron sleep together she freaks out because they grew up together, although they're not actually adopted siblings.
Music[]
- Dennis Warner's song I'm My Own Grandpa plays this for laughs.
- Lord Melody's Shame & Scandal too. Huge in France.
- Played straight, but in a twisted way in Johnny Be Fair, by Buffy Ste. Marie. Video here.
Music Videos[]
- In Vocaloid, we have Rin and Len Kagamine, who fans are debating over whether or not they are twins... despite the fact they have the SAME. FREAKING. LAST. NAME. Some claim that they are merely only genderbents of each other to avoid having their fanfictions labeled as Twincest, while others are eager to embrace the twincestiness that comes with them.
- To a lesser extent is the genderbents of the vocaloids (i.e. Mikuo, Kaiko, Gakuko, Luki, Ted); the fandom can get away with pairing them up because they are simply gender reversals of the official vocaloids and therefore are not canon siblings.
- Wouldn't pairing genderbents together be, in a way, more incestuous?
- In an attempt to placate the detractors, the creators declared that Rin and Len were literally mirror-versions of each other, so probably somewhere between Half-Identical Twins and Opposite Sex Clone. Of course, considering that all the Vocaloids are computer programs...
- To a lesser extent is the genderbents of the vocaloids (i.e. Mikuo, Kaiko, Gakuko, Luki, Ted); the fandom can get away with pairing them up because they are simply gender reversals of the official vocaloids and therefore are not canon siblings.
Video Games[]
- Fans of Baldur's Gate frequently debate whether a relationship between the PC and Imoen, both Children of the dead god Bhaal, would "count" as incest. Those who favor the relationship usually point out that the PC is often a different race from her, and that canonically they are known to not have the same mother, so that their main connection is definitely not any mortal source. (This is even brought up in the expansion Throne of Bhaal in a discussion between her and one of the other party members; Viconia suggests she should serve the main character in every way he desires for all that he's done for her, and why it shouldn't be a problem. Imoen balks at the thought and finds the idea disgusting... and then turns the question back on Viconia, who's also been canonically saved twice by the protagonist and is a romance option). Ultimately irrelevant, as she isn't a romantic option in the game... unless you mod it. And the only mod currently available and semi-complete is not very good.
- Hell, the original Spanish guitar solos they threw in on that thing are worth the price of admission alone!
- In the Mega Man Legends universe, Rock (Mega Man) is literally Roll's adopted brother, yet romantic hints exist. Fans debate whether the original series Rock (Mega Man) having a relationship with Roll would count as incest, as their original incarnations are both robots and no genetics are involved, despite being "siblings" created by the same man. Mega Man NT Warrior Rock and Roll have no familial relation at all.
- Tales of Legendia, in which Senel and Shirley pretend to be brother and sister (arguably, they do rather act as though they are, but they certainly don't resemble the other in the slightest, and have different surnames, to boot) until they are exposed by the main villain as not being related at all — in fact, each of them belongs to a different race altogether. Not too long after this, Shirley confesses to Senel that she is in love with him. They presumably end up engaged via the Rite of Feriyen by the end of the Main Quest ... although afterward, the other characters note that the relationship between them doesn't seem to have changed much at all (they even get new titles to reflect this; Senel obtains "Still A Brother" and Shirley obtains "Sister Girl").
- Inverted in Final Fantasy VIII: When Quistis suddenly remembers that she was raised in an orphanage with Squall she stops hitting on him.
- In fact, Selphie and Irvine are the only ones who actually remain inside their raised-together group for romance. Everyone else from the orphanage looks outside the group for romance, as Zell hooks up with Library Girl and Quistis has a devoted fan club.
- Final Fantasy II mostly contains only hints of love interests but the No Export for You novel does have Maria harboring feelings for her adopted brother and the story's main character, Firion.
- The plot for the Kingdom of Caerleon in Brigandine involves King Cai falling for his sister, who turns out to have been adopted.
- The Prince and his bodyguard Lyon in Suikoden 5, as she's an orphan raised by his father.
- Fire Emblem:
- Near the end of the first half of Fire Emblem: Genealogy of the Holy War, King Travant of Thracia kills Quan and Ethlyn and takes their daughter, Altena, to raise as his own. She ends up falling in love with Travant's biological son Areone, and while he cannot be recruited, he can be made into a cast-allied NPC.
- Sothe and Micaiah of Fire Emblem: Radiant Dawn aren't related by blood, but consider each other siblings. Yet they're also treated as love interests, particularly in how they start the game off with A support and if it's kept (the player can swap support partners as they please), they'll get married in their ending. They even get a Duo Unit in Fire Emblem: Heroes... during a wedding-themed banner.
- Quite important in Fire Emblem Fates. The Avatar can marry their siblings (of the opposite gender) from Hoshido and Nohr... because NONE are his/her actual siblings. S/he turns out to be the child of the late Mikoto (the Parental Substitute of the Hoshidan siblings) and the Bigger Bad instead.
- Emma Emmerich, in Metal Gear Solid 2, has a thing for her big brother Hal "Otacon" Emmerich. Turns out that they're really just stepsiblings; they have the same last name because Hal's dad adopted Emma after he married her mother. Emma's mother's sexual abuse of Hal, however, adds an extra layer of Squick to the situation.
- In the game Lunar Luna is Alex's adopted sister, and the two of them grew up together. Yet no one in the entire game, even Alex's parents, comments about their romance.
- An example for Super Robot Wars: the Kobayashi sisters Aya and Mai are revealed to be this. Both were originally test subjects, but their "father" Kenzo took them in as his daughters in the hopes their exceptionally potent Psychic Powers could complement each other for the combining Super Robot SRX.
- A similar instance for Joshua Radcliffe and Cliana Rimskaya of Super Robot Wars Destiny: Cliana was adopted by Joshua's father and throughout the game, the two treat each other Like Brother and Sister, except Joshua is sometimes called out for his Big Brother Instinct by insisting Cliana stay away from the battlefield. Then again, when your adoptive sibling has a slightly, unstable Split Personality, you'd probably do what Joshua does.
- Vandal Hearts 2: In a Bittersweet Ending (by letting your childhood friends die), you make good on the promise you made to Clive to take care of Rosaly, your adopted sister, and the ending is that she gave birth to your child. In a semi-justification, Joshua (main character) was adopted when he was almost to his teens, and was separated from Rosaly for a long time over the course of the plot.
- Hiroki and Elis in Canvas 2. She's actually his cousin, but she's stuck very firmly in the 'little sister' category when thinking of love interests. He writes it off as a Precocious Crush or her just joking around despite her being persistent about it to Single-Target Sexuality levels.
- The canonical routes in both Da Capo games have always been about Not Blood Siblings, though the second game strayed into a fine line between this and Kissing Cousins for both Asakura sisters, since the protagonist is both adopted and raised by another parent - who, in turn, is another Not Blood Siblings with Asakura grandpa.
- Which makes his surrogate son - Yoshiyuki - the adopted distant uncle of the Asakura sisters, which make his relationship with either sister one generation apart... No wait, that't not right. Hmm... Try to wrap your head around the family tree of this franchise.
- Yuri and Kira from Infinite Space insist that they are siblings while everyone around them think they're just very close friends who have a thing for each other. Yuri even gets someone to do DNA tests that reveal they have no blood relationship. They're Artificial Humans created by extra-dimensional aliens and they're only "siblings" because that's the first relationship that popped into Yuri's head at the beginning.
- The curate and his [adoptive] sister in the online game Echo Bazaar. It is possible for you to seek romance with either (or both) of them, and during the process you can find what looks like a fragment of a love letter from the sister to him.
Visual Novels[]
- In the Visual Novel Crescendo, this is also an important plot point. Ryo Sasaki aka the protagonist is living with his adopted sister Ayame (their parents having died three years earlier), and then his birth mother asks him to move in with her family. How the player answers the question is a major branch point in the story.
- Although it's pretty much one-sided, in Fate/stay night there's Shirou Emiya and Ilyasviel "Illya" von Einzbern. She is the biological daughter of his adoptive father, Kiritsugu Emiya, and has an obsession with him that is at least partially romantic. The fact that Word of God has openly stated that Illya was nearly the fourth romanceable heroine of the game and there are two separate Bad Ends where she magically makes him her slave for life (complete with heavy implications that he is 'that kind' of slave to her) really doesn't help.
- A huge theme in the tear-jerking Visual Novel Kana: Little Sister.
- Akane and Yoshikazu in Suika. Definitely doesn't go the usual way this trope normally does. You are given the choice to supposedly go that way, but then comes The Reveal...
- An integral part of the plot of one arc in the Tsukihime game. Shiki and Akiha met when they were seven and six years old, respectively, lived together for two years, and then separated for eight, somewhat short of "growing up together." Akiha knew the whole time that Shiki wasn't her real brother, and Shiki was at least vaguely aware of it, even admitting to himself once that his protective instinct towards her didn't really seem like sibling love. Needless to say, that really only comes into play during Akiha's arc. The fact that they are not related is important in all the arcs due to the events that occurred ten years with SHIKI, the real brother of Akiha.
Web Comics[]
- Konstantin seems to think this is going on between Onii-chan and Kotone in Experimental Comic Kotone. It isn't. What none of the characters except Kotone-chan herself and Onii-chan know is that Kotone is a Robot Girl — the whole "little sister" thing is just a cover.
- Parodied in this ad for J-List by Dan Kim of Clone Manga.
- Brought up by Monette in this Something Positive comic.
Web Original[]
- The heads of the Game FAQs group "The yusketeers" Yusiko and Yukito can't have a conversation without sexual tension showing up somewhere, apparently people have a venn diagram just to tell them apart.
- Some say that the sheer sexual tension that permeates any room the two are in is enough to stun a horse.
- Devin, he guy who owns eFukt.com, says he's in a sexual relationship with his sister. He always adds that she's adopted, so it's okay. Here's what she looks like: [1]. Can you really blame him?
- Zeus and Hera in Thalias Musings. The Titans are beings of pure spirit who paired off and joined their life force to create the first generation of Olympian gods. Zeus and Hera, as well as Hestia, Demeter, Hades, and Poseidon, were created by Cronus and Rhea.
- Athena and Artemis. Artemis is Zeus' biological daughter, and Athena is his ward and ex nihilo creation.
- Twilight Sparkle and Shining Armor in Friendship is Witchcraft. They're not related, so it's okay that she's obsessively in love with him and ends up married to him.
Western Animation[]
- On Tiny Toon Adventures, if Babs Bunny and Buster Bunny didn't always say "No relation" after introducing themselves, most viewers probably would have assumed they were siblings.
- Which was parodied when they cameoed in an episode of Animaniacs about Noah's Ark.
Noah: And you are...? |
- An odd example: in one episode of The Simpsons, Homer's father briefly dates Marge's mother. Homer is against their relationship, since he believes this will make him and Marge siblings, and retroactively turn the kids into freaks "with pink skin, no overbite, and five fingers on each hand!" The two wind up breaking up, though.
- However, Marge later becomes Homer's aunt when Abe briefly marries Selma. Which is even weirder when you take his relationship with Mrs. Bouvier into account...
- On Gargoyles, the title species lives in large clans that are considered to be a single family — nobody keeps track of who their biological parents are, and thus all gargoyles of the same age group refer to each other as their "rookery brothers/sisters" and older members as their "rookery parents." Word of God says that real incest never occurs, though, because a) each female can only lay one egg per mating cycle and b) pheromones prevent Kissing Cousin relationships.
- On Ugly Americans, Mark and Callie raise the latter's younger sister, Lillith (which admitted only took about two weeks). Lillith then declared her intention to kill Callie and have sex with Mark in front of a stadium full of other demons. Mark, who had spent the entire episode acting like a doting, enthusiastic father, is understandably freaked out.
- On American Dad, Roger tricks Steve into believing that he was kidnapped from another family, causing him to kiss his supposedly-unrelated sister Hayley.
Roger: Everything that happens from this point is just gravy. |
Real Life[]
- Matsudaira Katamori, ninth and the last Daimyo of Aizu and the direct boss of Shinsengumi, is an example of this and Kissing Cousins. He was born an inferior son of the tenth Daimyo of Takasu, whose biological brother (i.e. Katamori's uncle) was already adopted out and became the eighth Daimyo of Aizu. When the latter, again, was facing the problem of a lack of male biological issue, he adopted Katamori, his biological nephew, as his son and by extension, the future ninth Daimyo of Aizu. To cement the relationship between the two houses, the eighth Daimyo of Aizu arranged Katamori to marry his biological daughter Toshihime / Toshiko, i.e. Katamori's first cousin by blood and sister by adoption.