Kiyotaka, the only son of Yuko, who was supposed to be an answering machine at the luxury apartment where her sister lived for a while while her sister went on a trip. Yuuko smiles when she sees Kiyotaka, who can't hide her joy at being able to live in her mansion, even though she's a little astonished at her sister who doesn't care about Yuko's circumstances. "Mother, let's take a bath!" And the two of them will spend the bathing time without "mother and child entering the water".
