Mahou Onna Gakuen no Baiten de Hataraku Ore wa, Isekai kara Shoukan sareta "Harem dorei" desu.

Sakuma Ryuta, a man who was smuggled as a corporate slave and died of overwork, is reincarnated at a magical girls' school in another world. There was a class called "Sexual Practice" where female students taught the wonders of sex!! Ryuta, who has become the only man in the school, is given the role of teaching her how wonderful sex is as a "harem servant" for cute and innocent female students...!?