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.
Yeah, sometimes.
.نعم، من وقت لآخر
Ja.
Sí, a veces.
Sí, a veces.
Oui, parfois.
Sì, ogni tanto.
Sim, de vez em quando.
Да, иногда.