The Final Chapter
A high school student develops an unhealthy obsession with a girl who lives nearby. Unable to express himself, he begins collecting her trash and eating her leftovers. Unfortunately for her, his obsession does not end there. The boundaries he will cross are limitless, and the distance he will go to satiate his need are beyond redemption.
Easily the most extreme, the conclusion to the series reiterates that the human existence is meaningless; Human beings are garbage.