The narrative centers on Yuu Haruna, who has just relocated to Tokyo with his sisters after their father is compelled to accept an overseas assignment. He is still adjusting to the bustling city and the new responsibilities of living alone. While heading out for dinner and scrolling through Twitter, a high‑school girl abruptly collides with him. Believing he was photographing her from below, she snatches Yuu"s phone, shatters it, and slaps him before abandoning him on the pavement. The girl—Fuuka Akitsuki—is revealed to attend the same school Yuu is about to join. Unusually, Fuuka has no cellphone; she prefers listening to music on a CD player. Over time, the pair grow close and decide to start a band with friends, stepping into the professional music scene. With Fuuka"s presence, how will Yuu"s Tokyo life evolve in this chapter?
