My Plain Otaku Friend Is A Horny Guy With Premature Ejaculation And An Extremely Horny Man, And She Wants To Train My Dick By Sucking It Hard And Shaking Her Hips In A Really Obscene Way...

At university, she is a quiet girl at the edge of the class. However, I have the same hobby of liking erotic novels, and my otaku friend Shitara is the only one who can talk about anything to me. As we were casually talking after class, a condom fell out...