After a successful test of Gourai's new parts, the F.A. Girls hold a pep rally for Gourai in preparation for a rematch against Hresvelgr. Later, as Autumn rolls in, Ao takes Gourai to the park where she used to go as a kid. There, they come across a girl named Guriko, who leads them to a time capsule Ao had buried containing some mementos, including the Guriko doll she used to have.