History BrotherSisterIncest / AnimeAndManga

* ''Literature/EromangaSensei'' from the same writer/illustrator team as ''{{LightNovel/Oreimo}}'' makes it clear that step siblings Masamune and Sagiri are attracted to each other almost from the outset. Masamune straight up declares his love in episode 3, though neither pursues it in part due to hang ups from their loss of family members -- each is an orphan when the series begins, and he hadn't seen her in the 2 years since their parents died and she became a hikkikomori.

* ''LightNovel/{{Oreimo}}'': Whether or not siblings Kirino and Kyosuke do or don't have a sexual attraction/hidden desire to each other is the ElephantInTheLivingRoom of the series. The anime adaptation leaves it hanging; the last chapter confirms it.

* In ''LightNovel/{{Corsair}}'', Jean-Hughes saves his seven year old brother Canale from being raped, but he can't stop imagining himself doing the exact same thing to him. This leads to him pinning the guilt and blame on Canale and loathing him even more.

* ''LightNovel/{{Dokkoida}}'' [[PlayingWithATrope deliberately plays with this trope]] since Suzuo's [[MissionControl Mission Controller]], Tampopo, [[SecretIdentity disguises]] herself as his sister, Kosuzu, to blend into Earth society. The eighth episode in particular parodies this trope to the point of full-fledged {{Deconstruction}}: seeing a soap opera using this trope makes all of the PrettyFreeloaders in the apartment the characters live in worry about Kosuzu/Tampopo's relationship with Suzuo -- including Kosuzu. Suzuo doesn't notice a thing, and manages to [[ResetButton restore the status quo]] with a "dunno what's going on, but..." speech at the end.

* ''LightNovel/TheIrregularAtMagicHighSchool'' has Miyuki Shiba, who is VERY attached to her older brother Tatsuya and has [[spoiler: deliberately]] geared a good part of her life around him. On the other hand, Tatsuya certainly cares for Miyuki but he's got his own and huge issues and can barely feel actual emotions as a result. [[spoiler: It turns out that Tatsuya's only ''truly'' remaining emotion is his brotherly love for Miyuki, but later, so as the body of his sister genetically "improved" is enough to nullify any effects of incest between siblings, their aunt announces Tatsuya her son and adopts him, so that they could marry as cousins. So later in the story, [[ArrangedMarriage they're engaged to marry]].]]

* Yui from ''LightNovel/MuvLuvAlternativeTotalEclipse'' is in love with Yuuya even after eventually learning he's really her half-brother.

* Happens in ''Manga/NozomuNozomi'' when [[spoiler:Nozomu's sister [[GenderBender turns into a boy]]. She gets a RagingStiffie that won't go away. Nozomu tells her to [[ADateWithRosiePalms do the obvious]] but she's too scared so he "helps" her, just this one time]].

** The ''"Hide & Seek"'' manga continuity took the subtext and [[TriangRelations ran with it.]] While Elina's feelings for Leina remain paramount, the manga features a romantic subplot between her and Claudeete and even has Leina say [[ShipperOnDeck she supports her sisters being together]] (Chapter 28).

* ''Tayu-Tayu'': In Chapter 6, Reiju happens to overhear someone having sex inside an abandoned watermill and decides to see who it is. He's surprised to find it's two of his classmates: Haruka and ''[[{{Twincest}} her younger twin sister]]'', Sayaka. After the girls hogtie him, Haruka explains that she and her sister had been having sex with each other ever since all the boys their age had moved away. [[SituationalSexuality So the twins had no other options for relieving their pent-up hormones]]. Haruka adds that she and Sayaka soon became [[SingleTargetSexuality addicted to each other's bodies]], until it finally became impossible for them to be in the same room without [[CoitusEnsues tearing each others clothes off.]]

* ''LightNovel/EromangaSensei'' from the same writer/illustrator team as ''{{LightNovel/Oreimo}}'' makes it clear that step siblings Masamune and Sagiri are attracted to each other almost from the outset. Masamune straight up declares his love in episode 3, though neither pursues it in part due to hang ups from their loss of family members -- each is an orphan when the series begins, and he hadn't seen her in the 2 years since their parents died and she became a hikkikomori.

* The novel adaptation of ''LightNovel/{{Baccano}}'' says that [[HeroWorshipper Graham Specter]]'s first love was his sister. No information has been given beyond that so far.
* Averted in ''LightNovel/BakaAndTestSummonTheBeasts'' because while Akira Yoshii really wants to move her relationship with her younger brother to the next level, the normally super-horny Akihisa surprisingly expressly considers incest to be disturbingly immoral and constantly resists the nonstop attempts at seduction of his older sister.

* In ''LightNovel/ChivalryOfAFailedKnight'', Ikki's younger sister Shizuku is interested in this. Ikki, to his credit, finds this highly disturbing and other characters note that her behavior is taboo. Her behavior is due to the neglect and abuse Ikki suffered at the hands of the Kurogane family, so she decides to love him enough to make up for every other member of their family. Shizuku's behavior can clearly cross the line of normal brother-sister relations, which causes quite a few raised eyebrows around campus.

* ''LightNovel/{{Durarara}}'': Namie is quite blatant to admit that her love for her younger brother Seiji is not familial. Even Izaya finds it a bit disgraceful.

** On that note, Azaka from ''LightNovel/TheGardenOfSinners'', who can be considered prototype of Akiha above, also loves her brother deeply, to point where it gets in the way of her becoming friends with the series heroine Ryogi Shiki. Her love may not be the same in nature as Akiha's but since she and her brother were used as a strong basis for Akiha and Shiki, it is likely that the "love for my brother" was carried over as well.

%%* It's the whole point of, and PlayedForLaughs in ''LightNovel/OniAi''.

* ''Manga/HybridXHeartMagiasAcademyAtaraxia'': Kizuna (age 17) has his first [[DeusSexMachina Climax Hybrid]] session with his biological 27-year old sister, Reiri, in volume 5 because there were no other options. However, a flashback to their childhood shows Reiri had an unnatural interest in her brother, even then and often bathed with him. They have additional sessions in volumes 8 and 10, by which time, Reiri fully accepts that she's in love with Kizuna. By volume 13, [[spoiler:they have unprotected sex almost every day, ''[[ExtremeLibido usually for hours]]'' at a time. It eventually results in Reiri being the first to become pregnant with his child]].

* ''LightNovel/HybridXHeartMagiasAcademyAtaraxia'': Kizuna (age 17) has his first [[DeusSexMachina Climax Hybrid]] session with his biological 27-year old sister, Reiri, in volume 5 because there were no other options. However, a flashback to their childhood shows Reiri had an unnatural interest in her brother, even then and often bathed with him. They have additional sessions in volumes 8 and 10, by which time, Reiri fully accepts that she's in love with Kizuna. By volume 13, [[spoiler:they have unprotected sex almost every day, ''[[ExtremeLibido usually for hours]]'' at a time. It eventually results in Reiri being the first to become pregnant with his child]].

** The attraction in this series isn't all that unrealistic. The Westermarck Effect isn't in play, since the twins were separated at a very young age (maybe 2 at the latest), and the general principle of genetic attraction makes it unsurprising that the sister would have some feelings upon seeing someone who may (not) be her brother. That the other is a childhood friend makes it all the more probable, since they would have subconscious affection for one another at the outset. There is some kissing and some hand-holding/hugging between the would-be sister and the brother. Otherwise, this is an AvertedTrope, since, as stated, the twin is not allowed to continue the relationship (which is part of the drama: which girl has to give up her romantic affections, and which girl gets to be by his side albeit as a sister, not a lover).

* ''LightNovel/EromangaSensei'' from the same writer/illustrator team as {{LightNovel/Oreimo}} makes it clear that step siblings Masamune and Sagiri are attracted to each other almost from the outset. Masamune straight up declares his love in episode 3, though neither pursues it in part due to hang ups from their loss of family members -- each is an orphan when the series begins, and he hadn't seen her in the 2 years since their parents died and she became a hikkikomori.

-->'''Haruko's friends, in unison''': "Your brother's a pervert!"
-->'''Haruko, cheerfully''': "He ''is!''"

* In ''LightNovel/SaikyouJuzokuTensei'', the story stars a Japanese high-schooler who [[ReincarnateInAnotherWorld reincarnates into a world of swords and sorcery after his death]], which he comes to love because there is magic, and he was reborn into a tribe of strong magicians called the Marren Clan. But when he, Abel, reached the age of sixteen, he was surprised by his father, telling him to [[ArrangedMarriage prepare for his marriage]] ..'''to his [[BigBrotherAttraction little sister Gizel]]!!''' Turns out the Marren clan has a tradition, of brothers and sisters marrying after the brother's coming of age, if they're less than 5 years apart. Their reason for this is their belief that a pure bloodline leads to stronger family bonds and offspring with stronger magic powers. He's also a product of incest, like the rest of the clan. This leads the protagonist to [[ScrewThisImOuttaHere escape the village]] and [[DesperatelyLookingForAPurposeInLife find his calling in life]]. Later, [[IWillFindYou his sister manipulates the village into forming a search party]] to find and force him back into the village and their marriage.

* Deconstructed to the point of FanDisservice in ''LightNovel/SasamisanAtGanbaranai'': In order to keep the power of Amaterasu in their bloodline, siblings in Sasami's family are forced to marry. Due in part to what is apparently a lobotomy, the sibling which does not possess Amaterasu's power is conditioned to care for and unconditionally love the one that does.
* Tiriel and Sorath in ''LightNovel/ShakuganNoShana'' have an incestuous relationship, though in this case it's portrayed in a creepy light. [[DemonicInvaders What they]] [[EnergyBeings are]] muddles the water, but only somewhat. Shana seems to take more offense at the French kissing than anything else.

* ''LightNovel/SisterPrincess'' and its "sequel" series, ''Anime/SisterPrincessRepure'', both have incestuous subtexts, but the subtext surfaces clearly in ''Repure'': in the very first episode, Karen recounts how she decided that she would be her brother's bride, despite society's disapproval of such a thing. In the original series it is less visible, although still present -- one sister (Chikage) was [[spoiler:Wataru's lover in a [[{{Reincarnation}} previous life]]]], Sakuya openly flirts with him (Rin Rin and Mamoru are more subtle hiding their flirting under the disguise of admiration for their Brother), and all twelve spend one episode making mock wedding dresses so they can play at being his "bride".

** Near the end of the first episode, Astral stumbles into [[LadyOfBlackMagic Maria's]] cell and loses consciousness. When he awakes moments later and sees her state of undress[[note]]due to Stallion's [[AttemptedRape attempt to rape her]], mere moments prior[[/note]], he decides [[ShesGotLegs he likes what he sees]] and rapes her. Though it isn't explored in the OVA adaptation, the source material heavily implies that Maria and Astral are the biological offspring of Pollux and his wife Maria -- who bequeathed her ring to her daughter of the same name. Meaning, Astral raped his biological sister [[SeparatedAtBirth without realizing it.]]

* ''LightNovel/EromangaSensei'' from the same writer/illustrator team as {{LightNovel/Oreimo}} makes it clear that step siblings Masamune and Sagiri are attracted to each other almost from the outset. Masamune straight up declares his love in episode 3, though neither pursues it in part due to hang ups from their loss of family members - each is an orphan when the series begins, and he hadn't seen her in the 2 years since their parents died and she became a hikkikomori.

* 15-year-old Sakurako Saiki from ''Manga/SakuraGari'' is a scary {{Yandere}} who is incredibly possessive of her older brother, the main character Souma, [[spoiler: and has had sex with him more than once.]]. For further subversion, [[spoiler: Sakurako is actually a ''male'', Youya, who calls himself like that after the horribly fucked-up death of his mother... whose name was Sakurako.]]. And even ''more'' subverted: [[spoiler: They're NotBloodSiblings. Souma is the son of the Saiki leader and his dead lost love, Abigail; Youya/Sakurako is the child of the original Sakurako ''and'' the retainer Katou. When Youya/Sakurako commits suicide, Katou reveals this and stabs Souma - apparently, to death.]]

* [[spoiler:Hoshina Utau]] from ''Manga/ShugoChara'' ''loves'' the resident {{bishonen}} catboy of the series, Tsukiyomi Ikuto. The thing is, [[spoiler:her real family name is Tsukiyomi and she ''is'' Ikuto's sister]], which does explain why Ikuto is so cold towards her advances -- in fact, [[spoiler:he's downright disgusted when she kisses him]]

** Near the end of the first episode, Astral stumbles into [[LadyOfBlackMagic Maria's]] cell and loses consciousness. When he awakes moments later and sees her state of undress[[note]]due to Stallion's [[AttemptedRape attempt to rape her]], mere moments prior[[/note]], he decides [[ShesGotLegs he likes what he sees]] and rapes her. Though it isn't explored in the OVA adaptation, the source material heavily implies that Maria and Astral are the biological offspring of Pollux and his wife Maria - who bequeathed her ring to her daughter of the same name. Meaning, Astral raped his biological sister [[SeparatedAtBirth without realizing it.]]

* In ''Manga/TheKindaichiCaseFiles'', a man masquerading as a serial killer is on a RoaringRampageOfRevenge for his dead lover...it's revealed after he is DrivenToSuicide that said lover was his sister. (And the lake where the murders take place is rumored to have been the suicide spot of another pair of sibling lovers.)

* In ''Manga/{{Ooku}}: The Inner Chambers'', it's revealed that Akimoto and his sister Kinu slept together, resulting in a daughter. When Kinu asked if he entered the Ooku because he was disgusted by what they did, his response was that if he hadn't, he'd be forced to marry, and he didn't want to father a child with anyone but her. Emonnosuke is ''quite'' amused when he finds this out about Akimoto, and points out that even Japan's origins center around this trope. It's probably pretty telling that he actually gets one of the ''happier'' endings: [[spoiler: after Shogun Tsunayoshi dies, he retires and returns home, meeting his daughter/niece for the first time, and is said to have lived the rest of his life out in peace with his family.]]

* In ''LightNovel/SaikyouJuzokuTensei'', the story stars a Japanese high-schooler who [[ReincarnateInAnotherWorld reincarnates into a world of swords and sorcery after his death]], which he comes to love because there is magic, and he was reborn into a tribe of strong magicians called the Marren Clan. But when he, Abel, reached the age of sixteen, he was surprised by his father, telling him to [[ArrangedMarriage prepare for his marriage]] ..'''to his [[BigBrotherAttraction little sister Gizel]]!!''' Turns out the Marren clan has a tradition, of brothers and sisters marrying after the brother's coming of age, if they're less than 5 years apart. Their reason is for this is their belief that a pure bloodline leads to stronger family bonds and offspring with stronger magic powers. This leads the protagonist to [[ScrewThisImOuttaHere escape the village]] to [[DesperatelyLookingForAPurposeInLife find his calling in life]]. And later, [[IWillFindYou his sister manipulates the clan into forming a search party]] to find and force him back into the village and their marriage.

* In ''LightNovel/SaikyouJuzokuTensei'', the story stars a Japanese high-schooler who [[ReincarnateInAnotherWorld reincarnates into a world]] of swords and sorcery after his death, which he comes to love because there is magic, and he was reborn into a tribe of strong magicians called the Marren Clan. But when he reached the age of sixteen, he was surprised by his father, telling him to [[ArrangedMarriage prepare for his marriage]] ..''to his [[BigBrotherAttraction little sister]]!!''' Turns out the Marren clan has a tradition, of brothers and sisters marrying after the brother's coming of age, if they're less than 5 years apart. Their reason is for this is their belief that a pure bloodline leads to stronger family bonds and offspring with stronger magic powers. This leads the protagonist to [[ScrewThisImOuttaHere escape the village]] to [[DesperatelyLookingForAPurposeInLife find his calling in life]]. And later, [[IWillFindYou his sister manipulates the clan into forming a search party]] to find and force him back into the village and their marriage.

* The original OAV series of ''Anime/TenchiMuyo'' is '''filled''' with incestual attractions -- the whole mess basically got started when Ayeka fell in love with and was engaged to marry her elder half-brother Katsuhito/Yosho. See IncestIsRelative for full details.

* ''Manga/{{Berserk}}'' subverts this somewhat, since [[spoiler: Serpico and Farnese were in love at one point and are half-siblings, but Serpico's love becomes more brotherly after he learns that Farnese is his half sister.]]

* Being focused on otaku it's no surprise this trope gets brought up and discussed in ''[[Manga/ShinozakisanKiWoOtaShikaNi Don't Become an Otaku, Shinozaki-san!]]'' Makoto's otaku buddies are jealous the he has a real life little sister, but Makoto himself feels no attraction to her (least of all because she tends to treat him badly), nor to any of his sister's friends specifically ''because'' he's known many of them since they were very young. Akina has no interest either, viewing Makoto as a gross otaku even as she becomes one herself, and because she falls more under SchoolGirlLesbian anyway.

* Even though very rarely used in a YuriGenre anime, the first episode of ''Anime/{{Kuttsukiboshi}}'' has [[spoiler:main character Aya cheating on her [[SchoolgirlLesbians girlfriend]], by having sex with her own terminally sick biological brother in a surprisingly CruelTwistEnding.]]

* ''[[SchoolgirlLesbians Shoujo Sect: Innocent Lovers]]'': In the first episode, Chizuru goes to Naitou for advice on how to confess her feelings for the girl she was secretly in love with. Since Naitou didn't feel like being bothered, she tells her to just say so and get it over with. Adding that she didn't want to hear anymore about it until Chizuru had finally done it, and demanded she provide proof. So [[BigSisterAttraction she confesses her love to Shigure that night.]] Just when it seemed that her feelings were unrequited, Shigure reveals she'd secretly been in love with her too and makes love to her. The next day at school, Chizuru delivers on her promise by showing Naitou a photo of them in bed together, which she had taken with her cellphone camera. When Naitou sees the other girl had been Chizuru's older sister, [[MyGodWhatHaveIDone she regretted having said anything]] since, had she known, she would've advised against it.

* ''LightNovel/{{Dokkoida}}'' [[PlayingWithATrope deliberately plays with this trope]] since Suzuo's [[MissionControl Mission Controller]], Tampopo, [[SecretIdentity disguises]] herself as his sister, Kosuzu, to blend into Earth society. The eighth episode in particular parodies this trope to the point of full-fledged {{Deconstruction}}: seeing a soap opera using this trope makes all of the PrettyFreeloaders in the apartment the characters live in worry about Kosuzu/Tampopo's relationship with Suzuo -- including Kosuzu. Suzuo doesn't notice a thing, and manages to [[ResetButton restore the status quo]] with a DunnoWhatsGoingOnBut speech at the end.

* ''LightNovel/EromangaSensei'' from the same writer/illustrator team makes it clear that step siblings Masamune and Sagiri are attracted to each other almost from the outset. Masamune straight up declares his love in episode 3, though neither pursues it in part due to hang ups from their loss of family members - each is an orphan when the series begins, and he hadn't seen her in the 2 years since their parents died and she became a hikkikomori.

** Considering the [[LesYay yuri subtext]] in the ''Franchise/PrettyCure'' franchise in general, we have the only Precure-sisters Love and Setsuna from the same series. They are step-sisters, though.

* ''Boys Empire'' is a [[LoliconAndShotacon shotacon]] doujinshi series that begins with Makoto regularly having sex with his older sister, Mina. When their mother, Umeko, finally realizes what they've been up to, she gets in on it, herself. They even work out a weekly schedule that determines which of them gets to sleep with Makoto on which days. By the end of the series, both of them (and his girlfriend, Hitomi) [[BabiesEverAfter end up pregnant with his children.]] Umeko, in particular, gives birth to twins, with one being his father's child and the other being Makoto's, since they impregnated her on the same night.

* ''LightNovel/HybridXHeartMagiasAcademyAtaraxia'': Kizuna (age 17) has his first [[DeusSexMachina Climax Hybrid]] session with his biological 27-year old sister, Reiri, in volume 5 because there were no other options. However, a flashback to their childhood shows Reiri had an unnatural interest in her brother, even then and often bathed with him. They have additional sessions in volumes 8 and 10, by which time, Reiri fully accepts that she's in love with Kizuna. By volume 13, [[spoiler:they have passionate sex almost every day, ''[[ExtremeLibido usually for hours]]'' at a time. As a result, Reiri is said to be the one to with the highest chance of becoming pregnant with his child.]]

%% This list has been alphabetized. Please add your example in the proper place. Thank you!

** Taken further in episode 12, where [[spoiler: before dying again (temporarily), the possessed Himari shares a last goodbye with Kanba. When they're the only ones in her Dream World. [[http://imageftw.com/uploads/20110929/1317318196481.jpg While she's pretty much naked except for her boots and the Penguin Hat, and Kanba's chest is exposed due to self-inflicted Clothing Damage]]. [[DoesThisRemindYouOfAnything A sexual encounter wouldn't have been out of place]].]] Though there ''may'' be a twist here, [[spoiler: with the sex-charged interaction itself being more in between Kanba and the ''possessor'', the Princess of the Crystal, rather than between him and Himari. [[MindScrew It's... hard to tell]].]] It happens again in episode 17, when [[spoiler: Himari/the Princess [[http://i42.tinypic.com/2wp8c51.jpg strips again]], [[CooldownHug cradles]] [[http://i39.tinypic.com/2em0gih.jpg a depressed Kanba to her/Himari's bare bosom]], and pretty much [[http://i40.tinypic.com/243mely.jpg throws herself into his arms]]. Again, not clear who is who here, but still. . .]]

** She wants to with sleep with Leina and pouted when she wasn't allowed to [[GirlsLove spend the night in her room]], in the first episode. Leina is more than aware of Elina's blatant incestuous crush on her, which is part of the reason she ran away from home and doesn't intend to return. Though she still [[SkinshipGrope indulges Elina on occasion.]] Such as episode 9, where she bathed together with her, then spent the night spooning with her in bed, while both were in the nude.

** The ''"Hide & Seek"'' manga continuity took the subtext and [[TriangRelations ran with it.]] While Elina's feelings for Leina remain paramount, the manga features a romantic subplot between her and Claudeete and even has Leina say [[ShipperOnDeck she supports her sisters being together]] (chapter 28).

* ''Tayu-Tayu'': In chapter 6, Reiju happens to overhear someone having sex inside an abandoned watermill and decides to see who it is. He's surprised to find it's two of his classmates: Haruka and ''[[{{Twincest}} her younger twin sister]]'', Sayaka. After the girls hogtie him, Haruka explains that she and her sister had been having sex with each other ever since all the boys their age had moved away. [[SituationalSexuality So the twins had no other options for relieving their pent-up hormones]]. Haruka adds that she and Sayaka soon became [[SingleTargetSexuality addicted to each other's bodies]], until it finally became impossible for them to be in the same room without [[CoitusEnsues tearing each others clothes off.]]

* WordOfGod is that Hikari from ''Anime/DigimonAdventure'' has feelings for her brother Taichi. It was presented in a subtle way that [[GettingCrapPastTheRadar kids weren't supposed to get but older fans probably would]]. Episode 21 was written similar to a love story.