Tsumugi visits Princess Ring. Princess Ring says there is still a lot she doesn't know. Tsumugi tells her she will teach her many things and they make a promise to meet the next day at lunchtime. In order to learn more, Tsumugi goes to the Paradise Academy library disguised as Mugi-chan. Tsumugi is excited to teach Princess Ring even more. However, she becomes so engrossed in the book that she forgets her promise to Princess Ring...
