Goodnight Blue World

Uragiri is born into a world coated in blue: society enforcing individuals to kill themselves, reality mixing in with fiction, and all is ruled by a powerful Yddrasil that had been corrupted by man's blood. It is about to get much worse when he must go on an adventure to find a woman who speaks to him in his dreams, and must paint the world red or gray in order to bring about a new god.