Akari, Yuuki and Nozomi go to Reika's concert. A close encounter for the three sisters, but they do not even remember each others faces. The three gaze at Reika, spellbound...

Akari decides to apply to the “Akiba Music School”, but Samuel's expression is clouded. He is concerned that she will be dragged into something from her past because of this.

Kisaragi has come to watch how the lessons are going and all Akari can do is be nervous and make mistakes.

Kisaragi tries out raising Akari’s group as a three-person group. But Jun wants to work alone. Akari tries to mediate, but there is no way that it is going to work out.

Akari now knows for certain that she loves Kaito. Kisaragi brings Yuuki to Class S. While they are walking home, Yuuki sings a nostalgic song, which is the one and only memory that Akari has of her childhood.

Akari tells Samuel about Yuuki, the jewelry with the blue stones in them, and the song from her memories. Akari and Yuuki are shocked to find that they are two of three sisters.