Although he has a girlfriend he lives with, the college student next door, Koiro, suddenly shows up with a home-cooked meal, saying, "I made too much..." The man hesitates at first, but then gives in when she looks up at him with a sullen look, and invites him into his room. Then, Koiro, acting like his girlfriend, starts washing dishes and cleaning up on her own, and instead of showing any signs of leaving, she stays longer and longer. Furthermore, she touches him in a natural way, and makes unexpected...