Kei's finally used to being around guys, and she no longer loses her lunch when interacting with them. This has led to her and Kousuke becoming closer friends. However, now Yui's mood seems to have soured. Kei speaks her mind on a topic she believes to be the root of Yui's bitterness, but instead of smoothing things out she ends up making things worse. In the midst of their arguments, Yui reveals that he and Kei knew each other in the past. Confusion overwhelms Kei because she thought she'd only met Yui when she'd enrolled at Houou High. Did Kei forget something important or is Yui spouting more lies? How can she even think about the past when the present is in peril? She's too busy battling Yui's mind-games and keeping her secret from being exposed! Can't a girl catch a break?!