I'm Standing on a Million Lives Vol. 3 (manga)

THE PATH ONE CHOOSES

The ever-calculating Yotsuya carries out an unheroic act of vengeance, and the players successfully manage to complete their quest. Their victory allows them to ask the Game Master a single question, and the truth about the world they've been sent to is revealed. But when he learns that this strange new world isn't as virtual as he believed, Yotsuya is forced to confront the consequences of his actions...