Busty mother natsumi yukimizu has a problem with her son in their single-parent household. Literally, he can't stop touching her breasts. Whenever she does anything, he says "boobs." Her grown son grabs her overly large breasts. However, she accidentally feels good. Then, she is seen masturbating to soothe her heated body. Since then, her son has been groping her breasts from behind while she does housework. "No, it's not okay..." The mother tries to stop him, but the son continues to grope her.