Season 4
Life for the young women at Lillian Girls’ Academy couldn’t be more exciting! The Yamayuri Council is working on a theater production with the all-boys Hanadera Academy, and the school festival is quickly approaching. But Yumi’s duties pale in comparison to the task assigned to her by Sachiko: choosing someone as a petite soeur! Will she be able to handle the pressure of such a monumental decision, or will Yumi crumble under the weight of the Council’s — and Sachiko’s — expectations?
Episodes
1 The School Festival is in Shock² Jan 3, 2009 
2 An Ordinary Day with Nothing Special About It Jan 10, 2009 
3 The Sœur Audition Jan 17, 2009 
4 Future Little Sister Jan 24, 2009 
5 The Red Rose's Sigh Jan 31, 2009 
6 An Unexpected Guest Feb 7, 2009 
7 The Blank Map to the Future Feb 14, 2009 
8 On the Other Side of the Clouded Glass Feb 21, 2009 
9 The Masked Actress Feb 28, 2009 
10 The Keychain Mar 7, 2009 
11 Keyhole of the Heart Mar 14, 2009 
12 Crisscross Mar 21, 2009 
13 In Search of You Mar 28, 2009