The feeling of “sadness” of creatures can be heard as sound. Inose Kaoru, a popular composer has such a unique constitution. One day, he hears a beautiful sound that he has never heard before. Following the source of the sound, he found lawyer Sagawara Masumi. He wants to hear more of that sound to motivate his creativity. He wanted to know the root of the sadness and was attracted more and more. However, he realized that Masumi’s brother was the reason for that sound …!?