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.
Is she also a demi-hum—
—هل هي نصف
Ist sie auch ein Halb…
¿Ella también es semi…?
¿Ella también es semi…?
C’est aussi une aji…
Anche lei è una semiuma—
Ela também é uma meio-hu—
Она тоже полу...