The rest of the Yamayuri Council find out that Yumi finally accepted Sachiko's rosary. Meanwhile, Shimazu Yoshino and Hasekura Rei are voted the school's best sœurs due to their respective girly and bishonen appearances, but Yumi talks to Yoshino and finds out that there's more to the pair than meets the eye and that the relationship between the two is far from perfect.

Sei takes Yumi to visit Sachiko's house on New Year's Day where the Yamayuri Council have a party. All the major characters are reintroduced, and with the start of the New Year, Yumi looks happily forward to spring.

In their midst of their graduation preparations for the third-years, the en boutons forget to organize a farewell party for the Rosas. To make it worst, Yumi finds out at the last moment that the en bouton petite soeurs must also put on a performance, and collapses from the pressure of all her various duties.

Shimako and Noriko become even closer, but a shocking revelation about Shimako's true religion is announced in front of the entire school, testing their relationship. Meanwhile, the Yamayuri Council is concerned over the state of Shimako's well-being and decide to take matters into their own hands.

Yumi gets back onto her feet with different people helping her out. She learns that she must develop an identity outside of being Sachiko's petite soeur.