A timid young man worked as an ordinary teacher in a school, and experienced constant psychological and emotional abuse from colleagues and even students. Because he was very modest and shy, he couldn't defend himself, which caused him great suffering, and he was considered a coward and mocked more than before. In general, being in such an atmosphere became unbearable for him, so he had to quit. But the hero couldn't afford to be inactive, so he went to the islands where the Hiyakki Academy was located, and got a job there as a teacher. However, his work would be quite unique.
It turns out that his students are not bold or obedient children, but real yokai, except for being young. The teacher is filled with horror and understandably fears for his safety. He used to avoid his students, but they were ordinary people, while vampires, demons, skeletons, and ghouls will definitely make him nervous. However, his assumptions may turn out to be completely unfounded, as the appearance of a monster does not always imply unruly behavior. So during the day, the man will be cautiously approaching the supernatural, while the monsters will find their mentor an interesting person.