Keiko's boyfriend, hes a “perfect gentleman" during the day but the nighttime, well, that's another story. His sex drive knows no bounds, and every time he sees his girlfriend, he definitely gets his fill for the month. Despite his best intentions, he seems to be a bit of a knucklehead and oblivious when it comes to dealing with his girlfriend. When a new wardrobe and a mysterious receipt in his pocket threaten Keiko's trust, Shun's really going to have to turn up the charm to keep his girlfriend !