Rui (Rui Ayukawa) was worried that her husband's stepchild would not open up to her. She decided to take strong measures to build a good parent-child relationship at all costs. Her plan was to barge into the bath where her stepson was taking a bath and close the gap by being naked. Rui thought that this would help her stepson open up to her, so she charged into the bath completely naked, but... this action triggered an explosion of the emotions that her stepson had been hiding.