After landing a coveted job at a major company, Kenji temporarily moves in with his aunt and uncle in Tokyo while searching for a place of his own. Living under the same roof as the aunt he has always desired is exciting enough, and when his uncle leaves on a long business trip, the two are finally alone. Kenji gradually stops hiding his feelings and eventually uses her underwear to masturbate. Drawn in by the sweet scent of her still-warm panties, he wraps them around his cock—only for his aunt to walk in and catch him.