History Main / FlirtyStepsiblings

* ''Anime/VoltesV'': So, it's somewhat played with. [[spoiler: Prince Heinel wants to TakeOverTheWorld, and one of his aides is Katherine Rii, who's the only one he's emotionally vulnerable towards. Their romance is mostly unrequited because Heinel is a {{Tsundere}} and Katherine CannotSpitItOut. It ends in tragedy when Katherine sacrifices her life to save him, giving him a DyingDeclerationOfLove before she passes. What makes this complicated? Well, after the anime ended, [[Creator/TadaoNagahama the creator]] [[WordOfGod released]] the [[https://www.amazon.co.jp/-/en/dp/B01J145D2K Roman Robo Anime Climax Selection]], which contains many meta, behind-the-scenes and trivia-related content about the anime - one of which is that after Heinel's grandparents died, Katherine's family took him in and raised him as one of their own, something that even the [[VideoGame/SuperRobotWars video games]][[note]]Specifically, 3rd Super Robot Wars Alpha[[/note]] confirm. However, Katherine and Heinel do not regard each other as step-siblings, even if they are in the technical sense. Heinel often refers to Katherine as a friend, as does the aforementioned book, stating that Katherine befriended Heinel when she saw him being bullied and felt protective of him]].

* ''Seaside Hotel'': Fie and Morten get married after Fie's father Peter Andreas and Morten's mother Molly do, although Fie and Morten met and became romantically involved before their parents did.

* ''WesternAnimation/MartinMystery'': It takes the subtext to the nth degree. They were really pushing it to the limit. That's what happens when you take characters who were lovers in the original comic and [[SiblingSwitchSquick turn them]] [[DubText into]] NotBloodSiblings.

* In ''Series/AwkwafinaIsNoraFromQueens'', Nora develops a mutual crush on Chuck, but after they learn that her father is dating Chuck's mother, the thought of becoming stepsiblings disgusts Nora and Chuck out of doing the same. Eventually, Chuck unsuccessfully tries to stop the parents from marrying by confessing his love for Nora.

* In ''Series/AwkwafinaIsNoraFromQueens'', Nora develops a mutual crush on Chuck, but after they learn that their parents are dating, the thought of becoming stepsiblings disgusts Nora and Chuck out of doing the same. Eventually, Chuck unsuccessfully tries to stop his mother from marrying Nora's father by confessing his love for her.

* The whole plot of ''LightNovel/MyStepmomsDaughterIsMyEx'' is centered on this trope. Main characters Mizuto and Yume previously dated before, but they broke up, only to find two weeks later that their respective parents have decided to marry each other and they'll now all live under one roof. The rest of the series is about them trying to live as stepsiblings but still dealing with their lingering feelings for each other.

* In ''LightNovel/TheTestamentOfSisterNewDevil'', predictably, Basara has much romantic and sexual tension with his new sisters Mio and Maria. But in reality, they are actually the new demon lord and her assistant respectively. But even after finding out, he still does what he can to protect them from demons and others that want Mio dead. And Maria, being a succubus, naturally likes to tease him.

* The whole point of ''LightNovel/BrothersConflict'', specially its visual novel counterpart.

* This trope is commonly used in pornographic films, to the point of MemeticMutation of some of the more absurd uses of the premise.

* [[EvilMentor Master Li]] in ''VideoGame/JadeEmpire'' runs a martial arts school, and his two prize students ([[TheChick Dawn Star]] and the [[PlayerCharacter Spirit Monk]]) both are his adopted children. [[spoiler: After certain revelations about Master Li, it becomes apparent that there is also a case of [[KissingCousins flirty stepcousins]] if the Spirit Monk enters into a relationship with Silk Fox.]]

* The amount of HoYay between Gumball and Darwin in ''WesternAnimation/TheAmazingWorldOfGumball'' is...well, amazing. Especially in "The Bros", when Darwin gets jealous of Gumball's actual girlfriend. [[Administrivia/TropesAreFlexible They're actual adopted siblings rather than stepsiblings]] ([[UpliftedAnimal Darwin used to be the family's pet]]), though this arguably makes it ''worse'' because they've lived together since Darwin was two and Gumball was four.

[-[[caption-width-right:349:Martin's feeling the brotherly warmth… in his pants.]]-]

* The whole plot of ''Literature/MyStepmomsDaughterIsMyEx'' is centered on this trope. Main characters Mizuto and Yume previously dated before, but they broke up, only to find two weeks later that their respective parents have decided to marry each other and they'll now all live under one roof. The rest of the series is about them trying to live as stepsiblings but still dealing with their lingering feelings for each other.

* Nemo and Anna in ''Film/MrNobody'' started off as ChildhoodFriends who later become step-siblings and start developing a romantic relationship.

%% because they're a) not stepsiblings, and b) met as small children, WutheringHeights is NOT an example. It's NotBloodSiblings instead.

* ''Film/CruelIntentions'' ramps this trope UpToEleven, with the plot driven by a girl promising her besotted stepbrother sex if he does what she wants. ''Film/NotAnotherTeenMovie'' parodies this with them actually being related, and the brother being utterly repulsed at the idea, but going along with TheBet for other reasons.

* Yuzu and Mei from ''Manga/{{Citrus}}'' are two step-sisters who have to deal with their attraction to each other. Yuzu only liked males until she [[ClosetKey met Mei]].

* In ''VideoGame/FireEmblemThreeHouses'', Edelgard and Dimitri turn out to be step-siblings despite numerous characters playing ShipperOnDeck for them early on. There is still a bit of ShipTease between them even after this reveal, and Edelgard's Goddess Tower scene heavily implies Dimitri was her FirstLove. [[spoiler: This is played for tragedy later when they end up as enemies.]]

* In ''Manga/RandomWalk'', Yuka gets tutored by her "older brother" Towa, who is actually the son of her second mother from a previous marriage. At first, she sees him as nothing but an AloofBigBrother, until [[spoiler:he kisses her while drunk]], and realises that their lack of blood relation means that he's a guy she can potentially date. [[spoiler:]]

Usually this is seen in the undertones of their behavior in a show, and it almost always happens when two people become step-siblings in adolescence. Sometimes though, this is unintentional on the part of the writers and attempts to make new step-siblings act like a long-time brother and sister [[PlatonicWritingRomanticReading just come off as flirty]].