A man who runs a company married Hikari, his former president secretary after she divorced her first husband. Even though they were not blood related, she took care of him like he was her own son, worrying about him even after he became an adult and spent most of his time at home. One day when she went to encourage her grown up son in his room, she accidentally found out that all of her laundry had disappeared. She panicked but then discovered her missing panties among the clothes. Embarrassed by this situation, she tried to apologize to her son, but instead, he got excited and pushed her down...