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.
So if we're careful about what 
we eat, we can get by okay.
،لذلك إن كنّا حذرين بشأن ما نأكله
.يمكننا أن نكون على ما يرام
Deswegen kommen wir nur über die Runden,
wenn wir auf unsere Ernährung achten.
Pero si cuidamos lo que comemos,
estaremos bien.
Pero si cuidamos lo que comemos,
nos va bastante bien.
Mais si on fait attention
à notre alimentation, on s’en sort.
Quindi è sufficiente fare attenzione
a quello che si mangia per essere a posto.
Aí, se a gente cuidar da alimentação, 
dá para passar numa boa.
Думаю, можно обойтись,
если правильно составить диету.