Kōsei disagrees with the set piece that Kaori has chosen for the gala concert. Hiroko wants Kōsei to focus on being a pianist and to not focus so much on his dead mother. At night, Kōsei and Kaori sing "Twinkle, Twinkle, Little Star" before arriving at Kaori's house, where her parents work in a family-owned pastry shop. The next day, Kōsei and Kaori struggle to be in sync during their practice. To relax a bit, Kōsei, Kaori, Tsubaki, Ryōta and Nao play with fireworks by the school swimming pool. Tsubaki accidentally pushes Kōsei in the swimming pool, where Kōsei recalls Hiroko telling him to hear the music from his heart and not from his ears. He wakes up to his friends, in which Ryōta saved him from drowning.