When Yumi Fukuzawa entered the Lillian Girls' Academy, a prestigious all-girls Catholic school in Tokyo, she never imagined she would catch the eye of beautiful and demure Sachiko Ogasawara, one of the school's most popular students. Now Sachiko has offered to be Yumi's soeur, her "sister" and guide for all her years at the academy. The whole idea has Yumi completely flustered—after all, they hardly know each other!
The entire campus is abuzz with rumors about the two of them, but Yumi is conflicted over accepting Sachiko's offer. While she admires Sachiko, being her soeur would also mean constantly being at the center of the entire school's attention!
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Troubling Soeur Declaration | 2004-01-07 | 30 min |
| Season 1 | Episode 2 | The Awkward Piano Duet | 2004-01-14 | 30 min |
| Season 1 | Episode 3 | The Moon and the Rosary | 2004-01-21 | 30 min |
| Season 1 | Episode 4 | Yellow Rose Revolution | 2004-01-28 | 30 min |
| Season 1 | Episode 5 | Fighting Maidens | 2004-02-04 | 30 min |
| Season 1 | Episode 6 | Rosa Canina | 2004-02-11 | 30 min |
| Season 1 | Episode 7 | The Surprising Chocolates Part I | 2004-02-18 | 30 min |
| Season 1 | Episode 8 | The Surprising Chocolates Part II | 2004-02-25 | 30 min |
| Season 1 | Episode 9 | Red Card | 2004-03-03 | 30 min |
| Season 1 | Episode 10 | Forest of Thorns | 2004-03-10 | 30 min |
| Season 1 | Episode 11 | White Petals | 2004-03-17 | 30 min |
| Season 1 | Episode 12 | First Date Triangle | 2004-03-24 | 30 min |
| Season 1 | Episode 13 | Good Day, My Sœur | 2004-03-31 | 30 min |
| Season 2 | Episode 1 | During the Long Night | 2004-07-04 | 30 min |
| Season 2 | Episode 2 | Yellow Rose at Full Speed! | 2004-07-11 | 30 min |
| Season 2 | Episode 3 | Extremely Busy Days | 2004-07-18 | 30 min |
| Season 2 | Episode 4 | Will | 2004-07-25 | 30 min |
| Season 2 | Episode 5 | The Years that have Passed by | 2004-08-01 | 30 min |
| Season 2 | Episode 6 | Hold But One Hand of Mine | 2004-08-08 | 30 min |
| Season 2 | Episode 7 | Cherry Blossom | 2004-08-15 | 30 min |
| Season 2 | Episode 8 | The Cherry in the Ginkgos | 2004-08-22 | 30 min |
| Season 2 | Episode 9 | The Drop of Rosary | 2004-08-29 | 30 min |
| Season 2 | Episode 10 | Yellow Rose Warning | 2004-09-05 | 30 min |
| Season 2 | Episode 11 | Rainy Blue | 2004-09-12 | 30 min |
| Season 2 | Episode 12 | The Blue Umbrella | 2004-09-19 | 30 min |
| Season 2 | Episode 13 | Holding a Parasol | 2004-09-26 | 30 min |
| Season 3 | Episode 1 | Vacation of the Lambs | 2006-11-29 | 30 min |
| Season 3 | Episode 2 | Codename Operation OK | 2007-01-29 | 30 min |
| Season 3 | Episode 3 | Cool Breeze | 2007-03-28 | 30 min |
| Season 3 | Episode 4 | Ready, Go! | 2007-05-30 | 30 min |
| Season 3 | Episode 5 | Ciao Sorella! | 2007-07-25 | 30 min |
| Season 4 | Episode 1 | The School Festival is Shock² | 2009-01-03 | 30 min |
| Season 4 | Episode 2 | Just One Ordinary Day | 2009-01-10 | 30 min |
| Season 4 | Episode 3 | Soeur Audition | 2009-01-17 | 30 min |
| Season 4 | Episode 4 | The Future Soeur | 2009-01-24 | 30 min |
| Season 4 | Episode 5 | The Sigh of the Red Rose | 2009-01-31 | 30 min |
| Season 4 | Episode 6 | The Surprise Guest | 2009-02-07 | 30 min |
| Season 4 | Episode 7 | Blank Map of the Future | 2009-02-14 | 30 min |
| Season 4 | Episode 8 | The Other Side of the Clouded Glass | 2009-02-21 | 30 min |
| Season 4 | Episode 9 | The Masked Actress | 2009-02-28 | 30 min |
| Season 4 | Episode 10 | The Keychain | 2009-03-07 | 30 min |
| Season 4 | Episode 11 | Keyhole of the Heart | 2009-03-14 | 30 min |
| Season 4 | Episode 12 | Crisscross | 2009-03-21 | 30 min |
| Season 4 | Episode 13 | In Search of You | 2009-03-28 | 30 min |
| Art | Chigai Okado | Prop Designer |
| Costume & Make-Up | Atsuko Nakajima | Costume Design |
| Sound | Yoshikazu Iwanami | Sound Director |
| Sound | Mikiya Katakura | Original Music Composer |
