The annual festival with the neighboring boys' school is right around the corner. Friendships at Lillian are strained when the Yamayuri Council announces plans to stage a play, a move that puts them at odds with the Drama Club.
The time for the Lillian School Festival finally arrives. The day is full of activities and distractions as the Yamayuri Council and the Drama Club prepare their plays. But in the midst of the chaos, Kanako gets a true shock when an unexpected visitor comes to the school.
Yoshino and Yumi are feeling the pressure to select their petite soeurs. They decide to hold auditions to help them choose the right girls. The list for the tryouts is long, but one name is conscpicuously absent.
Yoshino promised she would choose a petite soeur before the upcoming Kendo competition. She has her eye on someone in particular, but her choice leads to its own complications.
The Yamayuri Council holds a Christmas party and Yumi is finally ready to choose her petite soeur. But things go from merry to miserable when her decision has unexpected consequences.
Yumi is still in shock after the unexpected events at the Christmas party. Sachiko tries to cheer her up with a New Year's sleepover, but Yumi's late-night dreams might offer better advice.
The students prepare to elect new officers to the Yamayuri Council, but the race is thrown into chaos when Toko adds her name to the ballot. Does she have hidden intentions and could she actually win?
The votes have all been tallied in the Yamayuri Council elections, but the school is still buzzing about the unexpected excitement in this year's race. Meanwhile Yumi tries to decipher what's happening between her and Toko.
Toko continues to further isolate herself from the Yamayuri Council. Yumi remains cool and collected about the rift, but Noriko worries that something else is going on. It's not long before the secret Toko has been hiding is revealed.
The Valentine's Day card hunt once again brings excitement and surprises. Toko decides to participate, but her search for Yumi's card leads to an unexpected realization about the relationship between the two.
The winners of the Valentine's Day hunt all go out on their victory dates. As Toko begins to open up, Yumi learns the truth about the girl's past and begins to look to the future.
