The 123rd time

This is a story that strands off of 'Second chance' which is an oumasai fanfic which I LOVE (you should read it). This is if Shuichi Saihara failed multiple times to save all his friends and gives in ,starting to enjoy the killing game. He acts as if HE is the mastermind and acts insane to where even Kokichi Ouma (the ultimate supreme leader) gets freaked out and slightly concerned for his mental health