History Yandere / FanWorks

* Rei in ''Fanfic/AdviceAndTrust'' is an unusual case since she's yandere towards her {{Love Interest}}s ''and'' their relationship. She loves both Shinji and Asuka but she refuses to pursue them romantically since she won't risk disrupting their relationship. However, no one else is allowed to romance either of them... or she'll get angry. And she's scary when she gets angry.

* The ''Franchise/HarryPotter'' and ''Manga/BlackButler'' crossover ''[[http://www.fanfiction.net/s/9227189/1/Harry-to-Akuma Harry To Akuma]]'' interprets Dudley Dursley as one. [[FoeRomanticSubtext Dudders really likes]] [[IncestSubtext his cousin]] Harry but since his parents have forbidden him from being friends with "the Freak" (and encourage him to beat him) [[IfICantHaveYou he decides that if he's not allowed to be Harry's friend than no one else should either]] and it's out of jealousy that he runs off the many people who want to be Harry's friends.

* ''Fanfic/SchoolIdolDays'': Kotori and You are this trope to Honoka and Chika respectively.

[[AC: ''VideoGame/FiveNightsAtFreddys'']]

* ''[[https://archiveofourown.org/works/47987521/chapters/120993817 Nico Nico Super Idol Show]]'': Ayuma Uhara to her {{Childhood Friend|s}} and girlfriend Yu Takasaki, always entering a TranquilFury if someone even suggest another girl being with Yu, and unleashing a murderous aura when recalling a magazine saying that Yu had the other idols as a harem, which terrifies her friends. Though like much of the fic, this gets PlayedForLaughs, as the rest of the Nijiasaki Club [[ShipperOnDeck happily supports the couple and even helped them get together]], and they see Ayuma's intense love as their gay champion in Nico Yazawa's most gay idol competition.

[[AC: ''Series/{{Glee}}'']]
* [[spoiler:Adam]] of ''Fanfic/{{Dalton}}''.
* Savannah Carlyle from ''If You Only Knew''. She begins a relationship with Puck and starts to show symptoms not long after her introduction but it is all culminates with her killing [[spoiler: Shelby]], Puck's ex. She even sings the Yandere song "This Little Girl" by Cady Groves as her confession.
* [[spoiler: Dani]] in ''Changing Directions'' is obsessed with Faith and threatens to rape her, but in this case, her obsession is treated as a disease and she is PutOnABus to deal with it.

[[AC: ''Literature/GoodOmens'']]
* In the DarkFic ''Fanfic/TheSacredAndTheProfane'' when Caphriel confronts Zirah about a certain killing spree, his response is along the lines of: ''What, it was your idea! [[LoveMakesYouCrazy Don't you understand, I did it for you!]] [[PsychoSupporter Isn't this was what you wanted?]]''

* ''[[https://archiveofourown.org/works/33638185/chapters/83591419 Fool's Paradise]]'' is a DarkFic where Shirou is killed and the Tohsaka sisters become obsessed with rescuing his AlternateSelf Archer from his torturous enslavement as a Counter Guardian...but only so they can keep him for themselves. When Archer opposes them in this [[note]]the only way to save him is for someone to take his place, and [[MoreHeroThanThou he doesn't want that]][[/note]], they turn him into a magically bound puppet who can't move or say anything they don't want him to.

* ''Fanfic/SonOfTheSannin'': Like in the ''[[Anime/NarutoTheMovieRoadToNinja Road to Ninja]]'' movie, Alternate!Hinata is one, capable of [[MoodSwinger switching between affectionate and murderously angry in a heartbeat]]. Naruto actually uses it to his advantage; when she's reluctant attack Dark!Naruto because he looks too much like the original, he tells her to imagine him as "an alternate version of [him] who cheated on [her] with Sakura". Cue murderous rampage.

* ''Fanfic/FateHaremAntics'': From her place in the Greater Grail, Iri is able to talk to her daughter Illya to an extent. She tells Illya all about Shirou, then manipulates events so that every Master and Servant in the War besides Shirou is female. Unfortunately, she failed to mention two things: She's trying to get Shirou a harem ([[IWantGrandkids she really wants grandchildren]]) and Kiritsugu forgot to tell Shirou about Illya. When Illya meets Shirou for the second time, he's talking to five beautiful women, and Illya orders Berserker to "kill those skanks who are trying to steal my onii-chan!"

** You literally just have to search 'yandere' on Website/FanFictionDotNet to get around 100 results for Hetalia that have the word ''just in their title or summary.'' Sure, they aren't really of the best quality, but it's telling of how many people write such things.

* Jara from ''Fanfic/KaraOfRokyn'' offers [[ComicBook/{{Supergirl}} Kara]] a choice: sleeping with her or getting beaten up. Kara turns her down and gets beaten for it.

[[AC: ''Series/{{Arrowverse}}'']]

** When Honoka turns down Kotori's confession, Kotori [[spoiler:kills her in response]].

* In ''Fanfic/SomebodyThatIUsedToKnow'' [[spoiler: Matt Engarde becomes this for Juan Corrida, towards whom he becomes increasingly obsessed with and possessive towards (in a very abusive way); it is heavily implied that he is responsible for Celeste Inpax's apparent suicide, after he fails to scare Juan into breaking up with her; the fact that her death happened not long after she and Juan had announced their engagement, and all of Matt's attempts to get Juan to call it off had failed, is rather telling.]]

* {{Lampshaded}} in ''Fanfic/OfficePolitics'' which again has [[SpellMyNameWithAnS Raito]] towards L:

[[AC: ''Franchise/TeenTitans'']]

[[AC: ''Franchise/{{Transformers}}'']]

[[AC: ''Literature/TheVampireDiaries'']]

* In chapter 28 and 30 of ''[[https://www.fanfiction.net/s/5401449/28/Lelouch-of-the-Oneshots Lelouch of the Oneshots]]'', [[CordonBleughChef Cecile]] had been taking cooking lessons from Schneizel and ends up developing feelings for him. However, she then finds out that a woman has been visiting his home, causing Cecile to plot the other woman's assassination, and making Suzaku, Lloyd, Ohgi, and Gino do it thanks to a poison introduced in the food she gave them, and she has the only antidote[[note]]The poison turns out to be sleeping powder in the end[[/note]]. But during the plot, they find out that the "woman" was actually Schneizel's [[DudeLooksLikeALady male lover Kanon]]. After the series of events where the blackmailed crew barely makes it out, Cecile decides that [[SubvertedTrope she can accept Schneizel and Kanon being together]]... [[YaoiFangirl because she realizes how enticing the two of them together are]].

* In ''{{FanFic/Ragnarok}}'' Takada towards Light. When Light began dating her in college they agreed it would be nothing serious since they both wanted to focus on their careers. But when Light broke up with her Takada did not take it well and has held a grudge for four years and seems to be out to ruin Light's career.

* ''[[https://m.fanfiction.net/s/14224277/1/Murder-On-The-Dancefloor Murder on the Dancefloor]] has [[spoiler:Théo Barbot]] as this, becoming one towards Marinette ([[PaedoHunt who is 14 to his 26]]), seeing nothing wrong with covering up Lila's actions against Marinette (including nearly ''killing her'') if it means Lila can then set him up to nurse her back to health and expect the FlorenceNightingaleEffect to take place - and then becomes Akumatized when he suspects Lila won't hold her part of the deal.