History NightmareFuel / DanganronpaAnotherEpisodeUltraDespairGirls

** [[{{Yandere}} Kanon Nakajima]] herself may count as NightmareFuel for some. ''Danganonpa'' is not strange to obsessive characters with a SingleTargetSexuality, but Kanon's case is the first one that is not PlayedForLaughs in any way and is instead meant to be as disturbing as it should be. Since half the chapters in ''Ultra Despair Hagakure'' are from her point of view, we get to see how Leon is the only thing she seems to think about, with him being her sole motivation for doing ''anything''. Since Leon himself never saw her as a romantic prospect and she admitted to have some violent thoughts against him when she saw him on dates [[StalkerWithACrush during her stalking]], it makes you wonder if she would have eventually snapped in a true {{Yandere}} fashion had the Tragedy never happened.

** Jataro's mother regretted ever having him because she felt he limited what she could do with her life, to the point where she wished he'd disappear or that she'd wake up one morning and he'd be dead. As if that wasn't bad enough, she was jealous of her son's beauty so she convinced him that he was ugly and made him wear a mask.
** Masaru's father forced his son to go out and get alcohol and tobacco for him. When Masaru couldn't buy them and tried to steal them instead, his father beat him for humiliating him in front of the police.

** Monaca's mother dumped her off with her biological father and half-brother, who treated her like an alien in their own home. They hated hearing her laugh or smile, and even hit her on regular occasions. Eventually she started pretending to be paralyzed to garner some sympathy from them. It really makes you wonder just ''what'' they were doing to her to make that seem like a plausible excuse.

* Getting a [[https://www.youtube.com/watch?v=ayf9AtOiLb4 Game Over sequence]] in general since you get SwallowedWhole by the Monokuma unit

* Monaca forcibly kissing Nagisa, and making comments about she plans to go further with it. The way Monaca [[ManipulativeBitch plays with Nagisa's feelings]] towards her while grooming him into thinking that he's getting a reward if she does what she says is disgusting, and a terrifyingly realistic moment of a young kid being pupeteered by a greater authority, even if that authority is a kid his age.

* Monaca forcibly making out with Nagisa and implying that she'll do more. Two kids kissing would look adorable in any other context, except that 1) it's already been established that Monaca is an AxCrazy ManipulativeBitch, and 2) Nagisa looks ''utterly terrified'' (even more so when Monaca kisses him the second time and she ''puts her tongue inside of his mouth''), and has every reason to be as he starts to realize how ''twisted'' Monaca really is while she plays merry hell with his mind.

* The epilogue's cutscene.

* During Junko's expository spiel, [[FallenHero Izuru]] [[TheChessmaster Kamukura]] punches through Shirokuma and Kurokuma's heads like it's ''nothing'' without saying '''anything'''. His facial expression [[TranquilFury doesn't even change whatsoever]]. Badass as it may be, remember that this is the guy who ''unwittingly helped Junko start the Tragedy''.

'''''Main installments:''''' ''NightmareFuel/DanganronpaTriggerHappyHavoc'' | ''NightmareFuel/Danganronpa2GoodbyeDespair'' | ''NightmareFuel/Danganronpa3TheEndOfHopesPeakHighSchool'' | ''NightmareFuel/DanganronpaV3KillingHarmony''\\