Rematching Seaside Wanting to find a way to help Matataki, Umika arranges a meeting with Kei and her Rocket R&D Club. They meet Kei's clubmates, Neon Teruya and Michiru Yugumo. Kei and her club spend the day helping teach Umika, Yu, and Haruno how to better build and test their rockets. Then, Umika carries out the next stage of her plan which is to challenge Matataki to another rocket duel, which she accepts. Umika and Matataki both launch their own rockets, with the one flying higher being the winner...