I'm always fascinated by bully manwhas.
Adults are useless and schools are lawless lands where kids have absolute power. Someone can get beaten half to death in the middle of the classroom but, somehow, no one will see who did it and parents will look the other way when they're given enough briefcases full of money. And, in some cases (A Devil Returns to Schooldays), bullying is turned into an actual occupation where people earn money for bullying their targets.
Anyways, these bullies are so doomed. Hasn't it only been a little while since Karma transferred? They're already at the point of fearing getting kidnapped and mysteriously disappearing one day.