Adult university student Ryota boards with his aunt Ayumi while attending college in Tokyo. He appreciates having a place to stay, but living so close to the woman he has admired for years makes it impossible to keep his feelings under control. When his restraint finally breaks, he becomes aroused by her freshly removed panties, secretly wraps them around himself and starts masturbating. Unfortunately—or perhaps fortunately—Ayumi walks in and catches him in the act...