Aine Yūki is good at making friends, and is enrolled in Star Harmony Academy's general education track. She befriends Mio Minato, the school's top idol, and becomes an idol herself.
With the Jeweling Festival a success, everyone returns to Japan. Karen has a celebration sleepover and Wakaba notices all the souvenirs she brought back from Sorbett. HoneyCat mention they saw Hariu buying a ring leading to Reflect Moon revealing Hariu and Tamaki's relationship. However it appears Tamaki is reluctant to commit to the proposal because of her work, so the idols decide to come up with a plan to get Tamaki to accept.