Komichi Akebi has been accepted into Roubai Academy, the middle school her mother, Yuwa, went to. Komichi has dreamed of wearing a sailor uniform ever since she saw her favorite idol, Miki Fukumoto, wearing one. She puts on the brand-new sailor uniform Yuwa made for her and, at last, heads off to her entrance ceremony. She starts out full of hope that she can make lots of new friends, but then she notices that all the other students are wearing blazers. It turns out the school's official uniform has changed from a sailor uniform to a blazer...

Roubai Academy is dyed in the colors of the sunset. The athletic festival has ended, and the students are cleaning up. Komichi changes out of her gym clothes and back into her sailor uniform in a quiet, empty classroom, preparing to take the stage and dance as the highlight of the after-party. With a push from Touko, she nervously takes the stage. As she does, a second spotlight hits the stage, separate from her own, and she turns around to see...