In a high school filled with young adults who met their fate before they decided whether to go to Heaven or Hell, they find themselves in a timed Purgatory where they figure out where they want to spend eternity and why it matters while they debate the ethical decisions for people on Earth.
A manga/webcomic set in modern times, this story centers around Slip E. Lexington, a loner ex-assassin trying to live a life of peace. He was killed by his friend sent by his former boss for leaving the job, then resurrected by a deity like being, now hes on a path for vengeance against those who've wronged him so that he can be at peace. But in order to obtain peace, he has to go through war.
A top killer who killed tens of thousands of lives, without any warning, was betrayed and killed by his love, and was even beaten into the most cruel and scary hell. Full of hatreds, he was eager to get an answer from his girlfriend, and luckily, he got a way to stay away from hell and be born again. So he joined the game and became a real game player ...