Penetrable feelings [Saiouma]

Shuichi Saihara was the Ultimate Detective, whom solved every class trial. After Kiyo got executed Shuichi noticed something wrong with Kokichi Ouma (or Oma idk), the Ultimate Supreme Leader. When Shuichi finally finds out his secret he has to penetrate the wall that the Leader has built. Can he do it in time? Who really is Kokichi Ouma?

Mentions: Self harm, abuse, claustrophobia.

*Spoilers* for the mastermind