Supernatural: Psychopath from Sakura Country

Only later did I realize that the character of the protagonist at the beginning was a bit of a beast. I would suggest reading less if you have strong empathy. Is the protagonist a lunatic with particularly severe persecutory delusions? You are nice to me just to make me relax my guard. They are all traps. I think you want to harm me. If you want to harm me, you have to do it.