Totsuko is a high school student with the ability to see the “colors” of others. The colors of bliss, excitement, and peace, as well as the color she cherishes as her favorite. Kimi, a classmate at her school, gives her the most beautiful color of all. Although she doesn’t play an instrument, Totsuko forms a band with Kimi and Rui, a quiet music enthusiast she meets at a second-hand bookstore in a remote corner of town. When they practice in an old church on a remote island, music brings them closer, forming a friendship and sparking an affection. Will they discover their true “colors”?