Zettai Zetsumei Game

Haruma ends up taking part in a mysterious game in place of his best friend. The prize for the winner is 100 million yen. The conditions for participation are: 1) you must be desperate for the money; 2) you can stay out overnight without telling your parents; 3) you must not tell anyone; 4) you don't mind that the loser's life may not be guaranteed. Haruma heads to the venue, but is locked in with the other participants. *"I won't lose!" "I'll definitely win!"* the boys and girls cried with gleam in their eyes. There can only be one winner. Will Haruma survive this survival game?! (Source: Kadokawa, translated)