Diabolus Kikoku 1

On Madoka's first day back as a member of the Student Disciplinary Committee, she keeps interrupting a mysterious gray-haired guy as he hooks up with girls all over the school. But when he somehow knows Madoka's name--but not his own--she begins to wonder if he might somehow be someone from her past. The only thing this amnesiac can remember is how to fuck, and he soon starts banging Madoka all over the school, from taking her missionary in an empty classroom to a paizuri titty fuck and making her cum as she rides his cock in the equipment room. But when her friend Sayako finds out what's going on, things are about to change forever...