Sick**********

Quickly Wear Yandere, There Is a World of Punishment

I want to read a book like "The cry bag is so tempting, the villains can't walk anymore". I'm looking for a quick read. The female protagonist is very smart and the male protagonist is super yandere. I remember there is a chapter where the female protagonist fails a mission and enters the world of punishment. In the world of punishment, the male protagonist is from a mental hospital!