The main character really has a sensitive butt and put that together with someone with buttfetish and you get a totally possessive pervert. They are really cute together and the big assed guy Looks so Erotik when the pervert touches his ass. That's a bit strange but still very arousing. But that guy is a real tsundere and can't be honest with the pervert.
Shiri Fechi Nanka ni Sukarete Tamaru ka