【Modern Erotic Fantasy Genius F4U's First Collaboration!】A teacher who doesn't know about the ejaculation management system worries about the bespectacled girl, Momonuma-san, who is left out in the classroom and ends up pairing with her. Confused by the sudden start of ejaculation management but accepting it for the sake of his students. However, she looks plain but is actually a super perverted and highly skilled slut...! In the classroom, library, even at home, he's made to cum so much his dick goes numb! 'If you can hold back, I'll let you insert it?' Every day is a routine of emptying the balls by this insatiable girl!
