Due to an incident, Kanade almost gave up on her dream of becoming a pianist, and makes a living by selling him body and part-time job.

One day, at work as a lounge player, he meets a mysterious man named Saiki. He honestly praises him piano skills, and Kanade has a faint love for him, even though he overlaps with him past trauma.
At Saiki's room, which I followed despite being invited, he suggested, "Why don't you become my exclusive pianist?"