Jingai Kyoushitsu no Ningengirai Kyoushi

After a painful experience destroys his faith in people, Rei Hitoma leaves teaching and decides he would rather live without dealing with anyone. Two years of unemployment later, he accepts a position at a secluded mountain school, convinced that he has finally found the quiet life he wanted.

Then he meets his students: mermaids, werewolves, and other demi-humans who enrolled because they want to become fully human. Rei, a man who claims to hate humanity, is suddenly responsible for explaining human behavior and relationships to girls who admire them. Their earnest questions and daily efforts begin cracking the worldview he built to protect himself, turning the classroom into a place where the teacher may have as much to learn as his students.