Rei Hitoma is my name, and I consider myself a misanthrope because of past hurt. When I expected that my new teaching post in the mountains would offer a calm, refreshing setting, I discovered that this institution caters to half‑humans aspiring to become fully human. A mermaid, a werewolf, a rabbit and a bird now sit in the courtyard under my supervision. I must instruct them about human culture—and perhaps, in doing so, I'll gain insights myself and reflect on my own life. This is not a fantasy realm or a reincarnation tale; it simply chronicles a teacher at an unusual school in the mountains and his pupils striving for humanity.