While Laura intends to find more humans who can open her three remaining pacts, Manatsu prepares for her first day in Aozora city's school. In her class, she recognises a girl she saw when she explored the city. The two girls befriend each other and discuss the school clubs they intend to join. Manatsu learns that her new friend, Sango Suzumura, desires to join the Cosmetics Club and runs a cosmetic shop along with her own mother, Miyuki Suzumura. However, Laura and Manatsu start a conflict among themselves, with Laura going in Manatsu's bathtub and the school's swimming pool to gain her friend's attention. As a result, the two leave each other after a quarrel. Laura, heading off to the city, encounters a reluctant Chongire making a Yaraneeda from a beach umbrella stand. Meanwhile, Manatsu begins to regret lashing out at Laura and rushes over to help her once she gets alerted of the Yaraneeda's rampage. Arriving to save the mermaid, Manatsu transforms to engage and defeat the Yaraneeda, with Laura returning the stolen Motivation Power. Afterwards, Laura and Manatsu reconcile, though the latter misses out on the school's club orientation.