Totsuko is a high school student with the ability to see the “colors” of others. Colors of bliss, excitement, and calm, plus a color she values ββas her favorite. Kimi, a classmate at her school, exudes the most beautiful color of all. Despite not playing an instrument, Totsuko forms a band with Kimi and Rui, quiet music enthusiasts who meet in a used bookshop in a far corner of town. While practicing in an old church on a remote island, music brings them together, forming friendships and sparking affections. Will they discover their true “colors”?