History NightmareFuel / HonkaiStarRail

** When Gallagher reveals to Sunday that he is the one responsible for Robin's death, the serial killer takes the moment to sit down and ignite his lighter. Not even a second later, Sunday is [[GoryDiscretionShot stabbed from behind]] by Something Unto Death, which effortlessly got through all of Sunday's security and caught him completely by surprise.
** TheReveal where the player realizes they've been stuck in a LotusEaterMachine ever since they arrived in Penacony. Sunday already won and the Trailblazer and everyone else is already stuck in a endless dream with the Trailblazer needing the help of Black Swan to wake up.

** Dreamchasers who are enthralled by [[MindControl Ena's Dream]] cannot be interacted with under any circumstances. Even your Clockwork, a key game mechanic used to adjust an NPC's emotions through the power of Harmony, has no effect on them. Instead, you are greeted with church bells and a picture of Clockie being strung up by his limbs in the emotion window, while the NPC is trapped in a state of "Satisfied".

[[quoteright:1000:https://static.tvtropes.org/pmwiki/pub/images/screenshot_2023_07_19_202337.png]]
[[caption-width-right:1000:''"...surely you can withstand the blessing... of Destruction."'']]

[[/folder]]

[[quoteright:1000:https://static.tvtropes.org/pmwiki/pub/images/maxresdefault_94533.jpg]]
[[caption-width-right:1000:Sweet dreams...]]

* The [[https://youtu.be/e5xueJq4Lwc?si=6FzntMfg7x5QyN1x "Rondo Across Countless Kalpas" animated short]] starts innocently enough, with the Memokeeper Black Swan asking Acheron for a dance in order to familiarize herself with the mysterious "Galaxy Ranger." But then Black Swan asks about Acheron's involvement with the disappearance of Duke Inferno/The Annihilation Gang, and then decides to look into her memories...only to find herself ''completely and utterly overwhelmed'' by [[AMindIsATerribleThingToRead whatever horrors lurk inside Acheron's memories.]] In the short itself, this is represented by a nightmarish-looking red-eyed cognitive version of Acheron, who unleashes a visceral NoHoldsBarredBeatdown on the Memokeeper, tearing her own memetic body to shreds by literally ''ripping out her feathers,'' all punctuated by imagery of [[DoesThisRemindYouOfAnything various prey animals being hunted down by a vicious predator.]] Given the reveal that Acheron is actually not a Galaxy Ranger at all, but is instead an Emanator of Nihility, Black Swan's horror is well-warranted - after all, as a physical avatar of [[PowerOfTheVoid the void itself,]] Acheron might be one of the only beings in the universe that could actually kill a living memory like her.

* During the [[https://youtu.be/e5xueJq4Lwc?si=6FzntMfg7x5QyN1x "Rondo Across Countless Kalpas" animated short]], Black Swan tries to look into Acheron's memories. What follows is an utterly '''''brutal''''' MindRape, where Black Swan is continually ripped apart by whatever it is she discovered, even as she frantically tries to break her link with Acheron. Afterward, Black Swan is left utterly terrified of Acheron and admits it was a huge mistake trying to peek into Acheron's past, to the point that she wants nothing to do with her anymore. Acheron's nonchalant reaction afterwards implies that she didn't do it ''intentionally'', and that it was whatever memories Black Swan was seeing that caused the MindRape. It's later revealed that due to Acheron being a Self-Annihilator and an Emanator of IX, she is essentially a walking black hole of memories, and since Black Swan is a LivingMemory, that essentially makes [[ManOfKryptonite Acheron]] one of the few beings who could actually kill Black Swan.

[[quoteright:1000:https://static.tvtropes.org/pmwiki/pub/images/screenshot_2023_07_19_202337.png]]
[[caption-width-right:1000:''"...surely you can withstand the blessing... of Destruction."'']]

* Hanya's Character Story 3 reveals what had happened to Xueyi for her to end up in her robot body, and it isn't pretty at all. During the Denizens of Abundance's attack on the Xianzhou Cangcheng, a giant walking Abundance tree impaled every Xianzhou soldier in its path, including Hanya's comrades, and then ''grew fruits with the faces of Xueyi and her other comrades, all of them begging her to join them.'' Hanya regularly has nightmares of that day, and frequently drinks Wine of Oblivion to forget. From an out-of-universe perspective, many players reacted in an "OH GOD KILL IT BURN IT" way upon learning about this incident, finding that it truly conveyed the horrors of the Abundance in a way they hadn't quite understood before.

* During the [[https://youtu.be/e5xueJq4Lwc?si=6FzntMfg7x5QyN1x "Rondo Across Countless Kalpas" animated short]], Black Swan tries to look into Acheron's memories. What follows is an utterly '''''brutal''''' MindRape, where Black Swan is continually ripped apart by whatever it is she discovered, even as she frantically tries to break her link with Acheron. Afterward, Black Swan is left utterly terrified of Acheron and admits it was a huge mistake trying to peek into Acheron's past, to the point that she wants nothing to do with her anymore. Acheron's nonchalant reaction afterwards implies that she didn't do it ''intentionally'', and that it was whatever memories Black Swan was seeing that caused the MindRape.

** Ifrit's abduction of Asta is horrifying on several levels. First, it happens oh-so-abruptly, with Asta suddenly being surrounded by blue fire just as the others realize the demon means to target her. Asta's reaction to spontaneously bursting into flames is one of sheer terror, and before the Trailblazer can do anything to help her, she is teleported away by Duke Inferno. Though the Trailblazer and Dr. Ratio are able to find and rescue her unharmed (as well as everyone else Ifrit had abducted from the space station), Dr. Ratio later reveals to Screwllum that had he not interfered with Ifrit's teleportation, it's likely the demon would've just [[ThrownOutTheAirlock warped his victims into deep space]].

* During the [[https://youtu.be/e5xueJq4Lwc?si=6FzntMfg7x5QyN1x "Rondo Across Countless Kalpas" animated short]], Black Swan tries to look into Acheron's memories. What follows is an utterly '''''brutal''''' MindRape, where Black Swan is continually ripped apart by whatever it is she discovered, even as she frantically tries to break her link with Acheron. Afterward, Black Swan [[HorrifyingTheHorror is left utterly terrified of Acheron]] and admits it was a huge mistake trying to peek into Acheron's past, to the point that she wants nothing to do with her anymore. Acheron's nonchalant reaction afterwards implies that she didn't do it ''intentionally'', and that it was whatever memories Black Swan was seeing that caused the MindRape.

* During the [[https://youtu.be/e5xueJq4Lwc?si=6FzntMfg7x5QyN1x "Rondo Across Countless Kalpas" animated short]], Black Swan tries to look into Acheron's memories. What follows is an utterly '''''brutal''''' MindRape, where Black Swan is continually ripped apart by whatever it is she discovered, even as she frantically tries to break her link with Acheron. Afterward, Black Swan [[HorrifyingTheHorror is left utterly terrified of Acheron]] and admits it was a huge mistake trying to peek into Acheron's past, to the point that she wants nothing to do with her anymore.

* Speaking of Aha the Elation, Sparkle's trailer, ''[[https://www.youtube.com/watch?v=RC6wQ-75uQU "Monodrama"]]'', demonstrates through her insanity as a Masked Fool that she is '''''the Elation''''', as she joyfully murders copies of herself, indulging in a disturbingly ''playful'' game of RussianRoulette right in the middle of combat, with a gleeful NightmareFace to boot.