Haruka feels down when the boys start teasing her for her big breasts, even ranking her #1 in a 'biggest breasts' chart. She and Yako visit Nayu's house, where Nayu asks them to be models for a fitting session to gain awareness for the underwear club. While Yako agrees, Haruka is a little worried about it. Nayu later tells them how she came to live with Keigo after her parents died...