With a concert planned to celebrate the group's one-year anniversary, the girls are sent on an overnight trip to a hot spring inn in Hakone to rest up. Ayaka Tachibana recalls her childhood, where she often squabbled with her older sisters Ayane and Ayana. That was until one day when she discovers Ayane being picked on by bullies for defending her and stepped in to protect her, after which they were both rescued by Ayana. Starting from middle school, Ayaka became a manga artist, initially joining 22/7 to aid her in that goal. During the trip, just as Akane and Miyako start to argue with each other, Ayaka sings a song passed onto her by her mother to calm them down, after which she gets a little closer with Miu. Following the trip, however, the girls are shocked when the Wall suddenly issues an order calling for the group to disband.