Married for 23 years... Koji and Suzuka are still a loving couple. Even after their son Yuji grew up, they still bathe together every day. And in the bath, Koji, with his strong sex drive, nuzzles Suzuka's nipples while she, forgetting to suppress her voice, sucks on Koji's penis, turning into just a female in the bath. Unaware that his parents are copulating in the narrow bathroom, Yuji presents them with 'bathroom comfort goods' on their wedding anniversary...
