Koji Cooln was a cold-hearted teacher who secretly had a soft side that nobody knew about, everybody always thought he'd be a dom when really.... he's a sub. "We're starting a new topic, which is Jack the Ripper. Can anyone tell me who he is?" He says boredly in his usual strict and grumpy tone, a girl raises her hand shakily. "Yes?"

Girl: "A Bodybuilder?"

Koji sighs heavily in frustration. "No, he was a serial killer."