Totsuko is a high school student with the ability to see the ‘colors’ of others. The colors of joy, excitement, and calm, in addition to which he values as his favorite color. Kimi, the homeroom teacher at her school, embodies the most beautiful color of all. Although Totsuko doesn’t play an instrument, she forms a band with Kimi and Rui, a quiet music lover who meet at a used bookstore on the far side of town. As they practice in an old church on a remote island, music brings them together, forging friendships, and sparking love. Will he reveal his true ‘colors’?