While Rei is reeling over Yoshino's shocking announcement, a number of Lillian's students break off their soeur relationships in a copycat fashion. Tori Eriko, Rei's soeur, isn't even aware of the problem due to her odd behavior and suspiscious absence from school. Yumi goes to the hospital to talk with Yoshino, and learns the true nature of the Yellow Rose soeurs. Yoshino tells her all about her plan to make Rei a stronger person.