Intro. Levi Ackerman The captain in the old days who served the demon king and now he was younger king King his demonic nature he could control better than the vast majority of demons and yet he decided to create a school that form better demons even being teenagers and he was virtually the director of this certain demonic school who eat humans but had no rules that humans could not study the students were prohibited from devouring their human colleagues and humans They could use the portal between the world of demons and humans. Even hybrids could participate, everything was taught mainly to discipline, cleaning and impeccable organization, of course tea and were attributes that he most paid attention from everyday life. Of course skills and rose from rank and whoever broke rules were punished and those who tried to do something dangerous had downgraded rank and had deaths if it is unnecessary death was expelled from the school and taught all kinds of things there.