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Basically this is when Father, I Want to Marry My Brother
goes horribly wrong. For some reason a person really does want to marry their sibling. Even though they understand what that means
. This is most commonly depicted in the form of a younger sister who has developed some sort complex or obsessive attraction to her older brother. Perhaps because he protects her
. Or maybe because he's the only man in her life that she feels safe with.
Sometimes it's suggested that it's not so much that she wants
him. Rather that she doesn't want to lose her brother to all those other girls who are stealing him away from her- so she decides she'll provide her brother with whatever it is he seems to want from other girls. This is still rather squicky
, but might be a little closer to the innocence of Father, I Want to Marry My Brother
. Sometimes might be part of a Token Mini-Moe
May or may not be a factor with a Little Sister Heroine
Anime and Manga
- Jackie from The House of Yes goes beyond finding her brother attractive. The two of them actually had an affair in the past.
Live Action TV
- Done in the Darkover series with Stormqueen! Everyone's already disturbed by the father suggesting he marry off his daughter to her half-brother as a way to resolve an inheritance crisis, but then Dorilys starts to get into the idea, and Donal gets used to it...
Mythology and Religion
- In The Borgias, Lucrezia and Cesare seem a little too close, with her saying that she will never love her husband as much as she loves him. Cesare seems to reciprocate, saying that if her husband proves "ungallant", "I will cut out his heart with a dinner knife, and serve it to you", in a very low, breathy whisper, while nearly giving her a Headbutt of Love, and this is just after he has carried her up to her bed on her wedding day. Given the historical characters they're based on, though, it would be surprising if there wasn't a lot of incestuous implications in the show.
- In Season 3 Episode 3 they explicitly consummate their attraction, finally moving away from the "subtext" and into straightforward "text".
- A two-part episode of CSI: Crime Scene Investigation focused on this. In the first part, she manages to create enough doubt that her brother committed a murder (that he actually did commit) at her own expense, but also leaving enough holes that she couldn't possibly be the murderer either. In the second episode, she murders his girlfriend and frames him for it, partly to get rid of the obstacle and partly because she figures that by visiting him in prison every day, he'll fall in love with her.
- In Degrassi Takes Manhattan there is a rivalry between Holly J. and Fiona for the affections of Declan who is Fiona's twin brother and Holly J.'s boyfriend. Fiona's attitude is "Boyfriends are temporary. Brothers are forever." She has an emotional dependency on Declan and couldn't stand to come second in his life which she makes clear to a whole party of people.
- In The Bible, Dinah either has an affair with, or is raped by, a man called Prince Shechem, who then agrees to marry her. However, two of Dinah's brothers, Simeon and Levi, instead go to war against Shechem and kill him. In one Jewish legend Dinah, angry and fearing that she was Defiled Forever without her fiancÚ, demands that Simeon marry her. He formally does but never sleeps with her. (This is the interpretation of a later verse, when it mentions "Saul, the son of the Canaanite woman" [Dinah] being a member of his household.)
- In one Arthurian legend a princess falls in love with her brother. A demon offers to make the prince love her back, as long as the princess and demon sleep together. Instead the princess gets pregnant and the demon turns her love for her brother into hatred, so that she accuses him of raping her. He is executed, but first declares his innocence and predicts that his sister will give birth to a monster. Indeed, her child winds up being the Questing Beast.
- Albedo from Xenosaga has a huge Big Brother Attraction with his twin, Junior. He becomes something of a Stalker with a Crush towards him, and was shown to have gone crazy due to the revelation that he wouldn't be able to stay together with him forever.
- The original version of the bishoujo game Ko-ko-ro... depicts an incestuous relationship between Souji Kuonji and his sister Asuka. Asuka seems more invested in the relationship than Souji; she even fantasizes about marrying Souji and having sex with him before they even leave the church where they were wed.
- The multiple depictions of incest in Ko-ko-ro... within and outside of the Kuonji family caused enough of an uproar that the game was banned from the Japanese market. An unauthorized edited version was later released, in which Asuka and Souji were no longer presented as blood siblings, but instead as stepsiblings. This was further edited when the game was adapted into a 2-part OAV; here, Souji is shown in flashback to have been an orphan adopted (and later molested) by the Kuonji family.
- In BlazBlue, it sure sucks to be in Ragna's shoes for having a younger brother Jin who not only wants to kill him, but was also obsessively lust after him to the point he will inflict physical harm or even kill those who he deems will take his "niisan" away from him e.g. Saya and Noel. However, it's also implied (to the point that it's all but outright stated) that Jin's obsession isn't natural: it's a product of being utterly Mind Raped by the Big Bad, Yuki Terumi, who needs Ragna to hate him as much as possible for as many reasons as possible so that he can continue living.
- Never actually happens in Little Busters!, but Kyousuke jokingly references this trope a couple of his nicknames for when Rin loses against him:
Kyousuke: This will be your name from now on: 'Her first crush looked like her older brother!'
Rin: I don't want that, moron!
- Akiha from Tsukihime is attracted to her older brother, though she usually hides it under antagonistic behavior. Though they're Not Blood Siblings.
- Notably, she's the only heroine with endings that has no "Good End". Either Shiki dies (the True End), or she becomes a vegetable (the Normal End). A side-story in Kagetsu Tohya following Akiha's True End reveals that he is still alive, though.
- Ange really seems to border on this in Umineko: When They Cry, which is parodied in the side stories of Tsubasa and the various manga omake. In the manga of Episode 4, she makes a complete fixation on Battler whenever she remembers her family. The implications are probably attenuated by the fact that Battler left the family shortly before her birth (and, indirectly, because of it, though he still adored her) and only visited her on her birthdays before coming back to the family and "dying" in the Rokkenjima incident, so they didn't have much of a brother-sister relationship (she was only 6 years old at the time). There is also the fact that they she's "only" his half-sister. Until we learn that Kyrie is Battler's real mother, so they are actually fully blood-related.
- Sayu in the original Death Note Abridged by TioH and Dargonakis. Who isn't particularly subtle about it.
- On Phineas and Ferb, this is one interpretation of Suzy to her older brother Jeremy. If nothing else she seems to fit the "doesn't want to lose him" model, as she's fiercely jealous of Candace becoming his new "favorite girl".
- Even The Simpsons seem to play a bit with the "she doesn't want to lose her brother" model. When in the episode "Milhouse Doesn't Live Here Anymore", Lisa cries because Bart prefers to spend time with his friend Milhouse, later she is very angry with her brother. However, she hasn't shown a similar reaction at any other time.
- A really disturbing example comes from Avatar The Last Airbender with Azula's relationship to Zuko. She has quite a lot of No Yay with pretty much everyone she encounters, but that infamous scene where Zuko confronts her about one of her latest schemes and she answers by acting as close to The Vamp as a PG show could get really drives the point home. There is also something extremely Yandere-ish in her Villainous Breakdown. This is an unusual example of this trope because they frequently fight each other with the intention of doing serious harm/killing each other, and despite being younger, she is the stronger one in terms of intelligence, fighting skill and her father's affection, and thus her Incest Subtext-laden interactions with Zuko have her occupying the creepily possessive and domineering position of a Domestic Abuser.