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.
By the way, do you ever want 
to take blood directly?
بالمناسبة، هل تراودك رغبة بشرب الدّماء مباشرة؟
Hattest du mal den Drang, Blut direkt
von einem Menschen zu saugen?
Por cierto, ¿nunca quieres
tomar la sangre directamente?
Por cierto, ¿nunca quieres
tomar la sangre directamente?
Tu ressens le besoin d’aspirer
directement le sang des gens ?
A proposito, ti viene mai voglia
di succhiare il sangue a qualcuno?
Vem cá, você não tem vontade 
de beber direto na fonte?
Кстати, а тебе никогда не
хотелось попить крови напрямую?