After finding out that her group is in danger of being expelled, Tiara tries to form a study group. Meanwhile, Rosetta keeps running off on her own after school, so the other girls follow.

Tiara is introduced to three sisters from Yamato who also go to Flora Girls' Academy: Kaede, Nadeshiko, and Tsubaki. Supposedly, they get along pretty well, but there seems to be some tension between Kaede and Nadeshiko.