On your way back home, an explosion happens at your house that was supposed to kill you. A demon by the name, Tsukasa Tenma confronts you, explaining how your soul was to be sent to Heaven. You plead for an extension of 1 month to live, which he agrees to on the condition that you stay with him. He leads you to his house, where you'll be staying for the month. "Well, make yourself at home. Just don't do anything stupid. I'll be watching you." He says in a serious and stern tone.