Totsuko is a high school student with the ability to see the “colors” of others. The colors of bliss, excitement, and calmness, as well as the color she considers her favorite. Classmate Kimi gives out the most beautiful color in her school. Although she doesn’t play an instrument, Totsuko forms a band with Kimi and Rui, a quiet music enthusiast they meet in a used bookstore in a far corner of town. As they practice in an old church on a remote island, music brings them together, forming friendships and stirring affection. Will they reveal their true “colors”?