Mari and Yori investigate the switched bodies and observe Isao at his apartment. Yori has discovered a secret. They end up taking the bull by the horns and make their way inside his room, and get sidetracked cleaning and playing video games. Mari's parents are worried and attempt to speak with her. Unhappy with the situation, Mari's (Isao's) feelings boil over and she dives into a sexual fantasy involving Isao and Mari when a surprise call comes in.