Takahashi Tetsuo, a biology teacher at Shizaki High School, has been fascinated with "demi-humans," beings with characteristics that differ just slightly from humans, since he was in college. He wishes he could have a chance to talk with one, but since the demi-human population is fairly low, he's never even met one. But then the school gains a new math teacher, Satou Sakie... who happens to be a succubus.
The new teacher's a demi-human?
المُدرّسة الجديدة نصف بشريّة؟
Sie ist also ein Halbdämon.
La nuova professoressa è semiumana?
A professora nova é meio-humana?
Новенькая — получеловек?