A pathetic middle-aged man named Atsushi has a shocking woman move in next door! She's called Asahi and, unbelievably, she never wears a bra. Atsushi can't help but be obsessed with her sexiness. One day, he accidentally sees up her skirt while she's returning home, but he gets caught immediately. Then she says, "If you keep quiet, could you do me a little favor?" and invites him into her house...
