The story centers on a Totsuko, a high school girl who can see the "colors" of the emotions in people's hearts. She attends a mission school in Nagasaki. In order to keep her friends and family from feeling dark feelings, she worries, reads situations, and even lies to smooth thing over. At an antique bookshop in the corner of town, she meets a beautiful woman with an incredibly beautiful color and a music-loving boy trying to put together a band. The story follows these three sensitive people who gather together to play in a band.