The protagonist is in his thirties and is a teacher at a girl's school. He only wishes to train his students well and help them graduate. That is, until a student of his starts showing signs of interest in something other than her studies.
A high school senior gets transported to an alternate reality where he has to save the world using his semen. Female guardians of this realm need nourishment to vanquish the evil that lurks beneath. And there's only one man who can provide them with what they need.
