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.
The train I tried to take was very crowded!
!القطار الّذي حاولت أن أستقلّه كان مزدحمًا للغاية
¡El que quise tomar estaba muy lleno!
¡El que quería coger estaba muy lleno!
E quello che ho provato a prendere era strapieno!
O trem que tentei pegar estava lotado!
А когда она приехала,
вагоны были переполнены!