This year's remaining, petite soeur-less en boutons, Yoshino and Yumi are feeling the pressure to find their little sisters, for various reasons. Yoshino suggests that they have a Soeur Audition to do just the thing.
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?