Frustrated because of their repeated failure to uncover the mysterious "D", who has sent a second and more threatening letter, the MON members (minus Doppel, who isn't interested) decide to take matters into their own hands and have Kimihito date each of them in one day. First, Tionishia nearly kills Kimihito by dragging him (literally) off to different shops, including a dress shop where even the largest size proves too small for her...