Fashion Psychopath no Sainan

I'm Chinatsu Hayami and I killed my mother three days ago, so I'm looking for a "friend" to help dispose of her body and hide her murder. I've got my eye on Takafumi Kato, a self-proclaimed psychopath who also happens to be my classmate. Kato-kun usually says things like: "When it comes to guro, I'm into torture and execution videos." "Oh yeah, and I guess photos of traffic accidents?" "Anything less bloody doesn't do it for me." "The guro that's in your usual manga is not nearly enough (lol)" "Or more like, you couldn't even call that "guro" (lol)" "I might be a psychopath..." "I am curious about what it's like to kill someone..." ...so I'm sure we'll become friends!