If you can give form to the sounds that flow in your head, you don't need anything else. Kiyosumi works as a live-in manager of an apartment building, and his only purpose in life is to play music. He was living a simple life without needing to interact with other people, and Ushio, the woman who lived in the room above him, greeted him. She says that she was heartbroken that day, and confesses that she looked forward to listening to Kiyosumi's music, which was leaking every day. Eventually, a casual performance video posted by Ushio changes Kiyosumi's world, who had never thought of letting anyone hear his music.