Yuu Haruna, a loner who lives more on Twitter than around people, has his phone smashed by a girl named Fuuka Akitsuki, who is convinced he was taking a photo of her. She leaves a CD behind, and returning it starts the friendship: Fuuka has no cellphone, still plays music on a CD player, and her blunt enthusiasm pushes Yuu toward the band he once promised his childhood friend Koyuki Hinashi he would start. As classmates join and the group aims for a stage, music becomes the thread tying them together. Kouji Seo's manga is a sequel to his earlier series Suzuka.