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.
This room is so nice and dark and cool!
!هذه الغرفة لطيفة ومظلمة وباردة
Dieser Raum ist so schön mit
seiner Dunkelheit und Eiseskälte!
Este cuarto es oscuro y fresquito.
Este cuarto es oscuro y fresquito.
Cette pièce est sombre
et il y fait si frais !
Questa stanza è così buia e fresca...
Esta sala é tão aconchegante,
 escura e bacana!
Здесь так классно: полумрак и прохладно!