The Music Box
S1, E4: Despite missing the selection party, Nanako has her interview, and humiliates herself. Mariko and Nanako realize that anyone could have left the message for Nanako, but Mariko correctly suspects Aya.

S1, E4: Despite missing the selection party, Nanako has her interview, and humiliates herself. Mariko and Nanako realize that anyone could have left the message for Nanako, but Mariko correctly suspects Aya.