Tadashi is a high school teacher living a stressful life at school. "Ok, I'll leave my stress behind doing "this"...." It's train molestation in a crowded train. This is his way of relaxing and he has never got arrested. He suddenly comes up with an idea. "Right. I can make them my sex slaves like this...." He finally decides to take revenge.... "It's you who are at fault. I'll get even with you now...."