Something like Reincarnation – Lord is Extremely Hardcore, where fl has a psychotic/criminally intelligent other side beneath her usual gentle demeanor. Thanks in advance.
That's hard.... I just want to die (kinda) has that, with mc being somebody with a literal deathwish Sinister Ex-Girlfriend also (kinda) has it, with mc liking to completely stomp on the hearts of targets. But it's justified... 1/2 Prince has a female(?) mc who is known as the blood elf because her(?!) methods are extreme If you good with GL then Creator God was enslaved by her yandere sister who, why and how extreme is in the title A maiden’s unwanted heroic epic has a main character who is a cute cinnamon roll but is also a cold-blooded killer that doesn't really care about anyone. This is mtl and mc acts as male and female a lot without actually caring about gender, but https://forum.novelupdates.com/threads/quickly-through-after-the-mission-is-completed.119582/ Has an mc who isn't psycho but she can be cruel Next one is mtl, Google to find thread: Wen Yao of the Apocalypse. Mc's temperament fits into the apocalyptic times nicely so she doesn't stand out with that much but she's okay with killing a child who promised vengeance against her in the future, so...