The second work by the beautiful mature woman Maya Mizuki, an exclusive Obasan actress!! Two days before the school trip, Maya's son Junpei was worried. The reason was that he had "hair growing down there." He was worried that his classmates would make fun of him when they all took a bath together. Junpei finally made up his mind and consulted his mother... "So, shall I take a bath with you now?" And a few minutes later, the two of them were taking their first "mother-son bath" in several years...