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[[caption-width-right:345: Personally, I'd prefer the high-carbon steel to the stainless, plus heft and grip make a big difference...[[ComicallyMissingThePoint oh, wait, this is about the girls?]]]]

A LoveTriangle where at least two of the members are [[{{Yandere}} mutually crazy in love to the hypotenuse]]. Leads to a massive amount of drama and generally lots of violence and attempts to MurderTheHypotenuse, only now it's working both ways, and if the third member of the trio is ''not'' mentally unstable and violent, expect them to suffer quite a bit. Sometimes though, the third member of the trio can be as crazy, if not more so, than the aforementioned crazies. And if they aren't, they may be soon enough thanks to the other two.



[[folder:Anime and Manga]]
* ''VisualNovel/SchoolDays'' is the TropeCodifier, with [[AnythingThatMoves Makoto]], [[UnluckyChildhoodFriend Sekai]], and [[TheOjou Kotonoha]]. But then he [[spoiler:starts sleeping around and [[FromBadToWorse things go to hell]]]].
* The Yuno-Yukiteru-Akise triangle from ''Manga/MiraiNikki'', with Yukiteru being stuck between the uber-Yandere Yuno and the more subtle, but still violently obsessive Akise.
* ''Manga/SayonaraZetsubouSensei''- although replace drama with comedy. Though, here, it's more like a {{Yandere}} LoveDodecahedron. They tried to make it more like a "Love Sphere"...but you can guess [[MurderTheHypotenuse what happened to most of the people]].
* ''LightNovel/{{Durarara}}'' has Namie and Mika towards Seiji. Though its later subverted when its revealed that Seiji is not only as crazy as them, he's also in love with [[ALoveToDismember Celty's head]].
* ''Manga/AxisPowersHetalia'' has the Belarus/Russia/Lithuania love triangle. [[{{Yandere}} Belarus]] [[BrotherSisterIncest likes Russia]], [[{{Yandere}} Russia]] likes Lithuania, [[DoggedNiceGuy Lithuania]] likes Belarus, and it goes downhill from there.
* Hitagi of ''LightNovel/{{Bakemonogatari}}'' shows some {{Yandere}} tendencies towards boyfriend Koyomi at times. And Suruga is {{Yandere}} for Hitagi. Also: [[spoiler:Black Hanekawa]].
* ''Manga/GirlsBravo'' has two Yandere love triangles in the anime. Namely, Lisa and Yukina are both Yandere for Yukinari and Kosame and Hijiri are both Yandere for Kirie. Played for laughs.
* ''SakuraGari'' had ''two'' of them:
** There is initially a love triangle between Souma, Masataka, and Sakurako. With Souma rather obsessively pining (to a Yandere-like degree) after Masataka, who has a huge crush on Sakurako, who is a Yandere for her brother Souma.
** When Souma mellows out and stops being {{Yandere}}, DepravedBisexual Dr. Katsuragi comes into view, making ''both'' him and Sakurako {{Yandere}} for Souma. Katsuragi loved Souma since they were children, and is upset that Souma loves Masataka [[spoiler:so he rapes and tortures Masataka with the intent to drive him away from Souma. Masataka escapes, but is left scarred and traumatised. Souma finds out, confronts Katsuragi on his bullshit and deals him a brutal HumiliationConga... that Katsuragi's wife transforms into KarmicDeath.]] As for Sakurako, [[spoiler: she eventually snaps so badly that she tries to kill Souma and Masataka, then is DrivenToSuicide.]]
* ''Manga/{{Bleach}}'': Loly and Menolly both think they have a love rival in Orihime because they believe Aizen has an interest in her. So they beat her up and attempt to kill her. However, Aizen has no interest in any of them. Loly also seemed to have quite a bit of FoeYay towards Orihime.
* ''Manga/WolfGuyWolfenCrest'' has an interesting (and nightmarish) example in that both Ryuuko and Haguro are Yandere for Inugami's more violent side, and lust after him. They are also in a sexual relationship with each other and think about Inugami while having sex. When the two of them find out that Inugami, who wants nothing to do with either of them, has started developing feelings for [[HotTeacher his teacher Aoshika]]...it gets ugly. Very, VERY ugly.
* ''LightNovel/AiNoKusabi'' has Riki being in a LoveTriangle with Iason and Guy, who are both dangerously obsessive of him. It went FromBadToWorse.
* The yaoi manga ''Manga/UnderGrandHotel'' has Swordfish being a Yandere for Sen who loves Swordfish back. There's also Norman who's in love with Swordfish but pretended to be in love with Sen so he could get closer to Swordfish. He tried to persuade Swordfish to kill Sen but that didn't work. So, on one occasion when there was a scuffle going on he tried to get Sen out of the way by stabbing him with a pencil but accidentally ends up stabbing his inmate Walter instead who was trying to protect Sen in the hope of getting protection from Swordfish. When he finds this out, Norman holds a knife to Walter's neck telling him, "If you don't want to die, don't butt in again Walter!"
* In ''Haru To Natsu'' Makoto finds himself stuck between the two twins Haruna and Natsumi who viciously fight over who will win him, to the point of tying him up, threatening him with a knife, and attempting to rape him.
* ''Manga/HotGimmick'' has the Azusa, Ryoki, and Hatsumi love triangle. Between Ryoki and Azusa, Hatsumi is like some kind of Yandere-magnet.
* ''Anime/SailorMoon'' has Prince Diamond acting like a {{Yandere}} towards her when she's already in love with Mamoru/Darien and Emerald acting like a {{Yandere}} towards Prince Diamond. Another yandere love triangle consists of Ali having a crush on Usagi and Ann having a crush on Mamoru, when Usagi and Mamoru already love each other.
* ''Manga/DeathNote'' features one, in which both [[{{ItsAllAboutMe}} Kiyomi]] [[{{AmbitionIsEvil}} Takada]] and [[{{PsychoSupporter}} Misa]] [[{{LoveMartyr}} Amane]] vie for the affections of [[CuteAndPsycho Light]] [[{{ManipulativeBastard}} Yagami]], who is [[{{Asexual}} not in love with anyone]]. Both women qualify as complete yanderes, but [[{{AGodAmI}} Light]] is just as crazy, if not more so, than either of them.
** Played even more strangely before then, where Misa also seeks the psychotic [[LightIsNotGood Light]]'s affections, and instead finds herself the object of [[AmbiguousDisorder L]]'s attraction - that is, when he's not [[ExaltedTorturer torturing her for information]] (or perhaps especially then?). Then there's the pounds of FoeYay hints that Light may have a thing for L, which may or may not be reciprocated, despite the fact that L knows he's a SerialKiller and Light later [[spoiler: kills him]].
* ''{{Manga/Gravitation}}'': Both Shuichi and Tohma are yandere for Yuki who is in a relationship with Shuichi.
* ''OkaneGaNai'' has both Tokigawa and Kanou acting like yandere to Ayase.
* In the manga ''Manga/DesireClimax'' both Hina and Shoei demonstrate some Yandere tendencies towards Mio.
* In ''Anime/ErgoProxy'' both Daedalus and Iggy are yandere for Re-I.
* In ''Anime/NeonGenesisEvangelion'', Naoko ''and'' Ritsuko are yandere for Gendo, albeit at different times, but Gendo is more interested in [[{{Necromantic}} Yui]] [[spoiler:hence his always being around her clone, Rei]].
* In an ImagineSpot in the first episode of ''Tsugou no Yoi Sexfriend'', the main character sees all five of his sexfriends as [[KnifeNut knife-wielding nutcases]].
* Played with in some Creator/MayuShinjo mangas. At first the male love interest will be a {{Yandere}} and BastardBoyfriend while his GirlNextDoor girfriend will be more or less normal. Then, the girl who will appear to challenge said GirlNextDoor will tun out to be a {{Yandere}} ClingyJealousGirl... meaning that the two yanderes do ''not'' compete for someone else, but the crazy dude is the target of both a crazy girl and a non-crazy one.
** Manga/SensualPhrase: Sakuya (BastardBoyfriend), Aine (Normal Girl), Ayako ({{Yandere}} girl)
*** And played straighter with Sakuya (BastardBoyfriend), Aine (Normal Girl) and Tomoyuki ([[BrotherSisterIncest siscon]] love rival)
** HaouAiren: Hakuron (BastardBoyfriend), Kurumi (Normal Girl), Reilan ({{Yandere}} girl)
** AkumaNaEros: Satan (BastardBoyfriend - and yes, it's THAT {{Satan}}), Miu (Normal Girl), Sara ({{Yandere}} girl)

* In ''Yandere Heaven'' the listener/heroine is trapped between two yandere males - the situation changes between each volume. The YaoiGenre SpinOff ''Yandere Heaven [=BLack=]'' has a male trapped between two Yandere men as well.
* ''AudioPlay/YandereNoOnnaNoKo'' is essentially the same as ''Yandere Heaven'' with the genders flipped.

[[folder:Comic Books]]
* During {{Superman}}'s [[DorkAge Red and Blue period]], the split Supermen had to contend with [[{{Yandere}} both Maxima and Obsession]] showing up at the Fortress of Solitude at the same time. While Maxima was horrified by Superman's situation, Obsession's reaction was that they now had one each.
* While Love is quite a stretch, Spider Man, Eddie Brook, and the venom symbiote have one of these. The Venom symbiote is a {{Yandere}} for Peter that wants to [[IfICantHaveYou kill Peter so no one can have him]], Eddie is a {{Yandere}} for the Symbiote that wants to MurderTheHypotenuse, Peter.

* In ''{{A Song Of Ice And Fire}}'' there's Lysa towards Petyr, and Petyr towards Lysa's older sister Cat. [[MadLove Lysa]] [[spoiler: raped Petyr [[DudeShesLikeInAComa whilst he was drugged, delirious and insensible]] twice in the backstory, with him possibly believing she was her sister.]] Petyr, who UsedToBeASweetKid, was left unhinged and bitter after being rejected by Catelyn, so he decided to ''deep breath'' [[spoiler: manipulate Lysa into killing her husband and accusing House Lannister of the murder, all in order to draw Catelyn's own husband, Ned, to the DeadlyDecadentCourt of Westeros, driving a wedge of tension between Houses Stark and Lannister. The end result: Ned was executed for treason, fanning the flames of aforementioned tension, which grew into a spectacularly bloody, continent-wide civil war, leaving thousands dead, the land ravaged and the economy hanging on by a thread just before the start of a winter that could last for generations!]] All of this, just because Petyr DidNotGetTheGirl! The guy takes {{Yandere}} to a [[UpToEleven whole new level of insanity.]]
* The Ian [=McEwan=] story ''The Comfort of Strangers'' is about a couple who become obsessed with [[spoiler: the protagonist's [[PrettyBoy beautiful]] boyfriend, and ultimately murder him together.]]
* AgathaChristie's short story "Triangle At Rhodes" features two couples: one consists of Valentine Chantry, who's on her [[TheVamp fourth husband]] and seems to have no real regard for his feelings, and her very possessive, jealous husband, Tony. The other consists of Marjorie Gold, a very kind, plain woman who is desperately in love with her husband Douglas, who seems to be infatuated with Valentine (who is returning his feelings). When Valentine is murdered, it looks as though Douglas attempted to kill Tony so he and Valentine could get together, but actually got Valentine instead by pure accident. [[spoiler: In reality, there were actually two love triangles: the fake one (Tony/Valentine/Douglas) and the real one (Marjorie/Tony/Douglas). Valentine and Douglas had no serious feelings for each other, but Marjorie made it look like they did- she wanted to start a relationship with Tony, and they felt that the best way to get rid of their partners would be to murder Valentine and pin it on Douglas, who would subsequently be hanged. Poirot sees through it instantly.]]

[[folder:Video Games]]
* ''IrisuSyndrome''. [[spoiler: Irisu likes Uuji. Ageha also likes Uuji, but she's not a yandere for him. No, the second yandere in this triangle is ''Uuji'', who likes Irisu but has [[InsaneTrollLogic completely]] [[DeathSeeker messed up]] [[TogetherInDeath ways of showing it.]]]]
* Happens in ''VideoGame/{{Yanderella}}'' with both true ends. Yatarou is friends with a GirlyGirl and a {{Tsundere}} {{Tomboy}}, both who are [[MadLove madly in love with him]]. Either way you choose, you'll make one angry and awaken the beast within her.

[[folder:Visual Novels]]
* The main plot of ''LimitPanic''.
* ''VisualNovel/SchoolDays'' has Makoto in the middle of a LoveTriangle with two Yanderes, Kotonoha and Sekai. The {{Anime}}[=/=]{{Manga}}[=/=]VisualNovel TropeCodifier. Note that despite the infamy the franchise has, in the original visual novel this is largely downplayed. Kotonoha and Sekai are both quite unstable, but most of the time it doesn't escalate into violence.

[[folder:Web Original]]
* WebVideo/ThatGuyWithTheGlasses had a [[AllLoveIsUnrequited triangle of rejection]] between TheNostalgiaChick, ToddInTheShadows and ObscurusLupa. The last one didn't do anything, but Todd bordered StalkerWithACrush towards her - and did [[NoodleIncident weird stuff]] trying to woo her - and the Chick in turn went as far as kidnap Todd to get his attention. ([[RealitySubtext Todd and the Chick are dating in real life]], and this triangle was abandoned after both ''Webvideo/ToBoldlyFlee'' solved it in-universe and Lupa being MisBlamed on the dismissal of [[TheSpoonyExperiment another reviewer]] made Todd uncomfortable)

[[folder:Western Animation]]
* On ''WesternAnimation/SouthPark,'' [[TheDevilIsALoser Satan]] is in a relationship with nice-but-boring [[InTouchWithHisFeminineSide Chris]] when his ex-lover, SaddamHussein, returns to Hell. Saddam kills Chris to get Satan back since he's dead again, Chris just reappears in Hell the next day. Saddam refuses to make peace with Chris and kills him again, only for Chris to start fighting back, and the LoveTriangle quickly descends into the two of them murdering each other each day as Satan equivocates about who he wants to be with.