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.
What are you two talking about?
عمّاذا تتحدّثان؟
Worüber redet ihr?
¿De qué hablan?
¿De qué habláis?
Dites, vous parlez de quoi ?
Di che state parlando?
Hein, do que é o papo?
О чём разговор?