The title. tone -neiro- Sound. a word that tugs at various heartstrings and evokes emotion in the heart. Colors. exist naturally from birth. It is something that exists in such a trivial and obvious way. but it leads to an emotional response from the subconscious mind. The title of this single was chosen because we wanted to deliver music that would allow us to be that kind of presence. Sayonara Aishii Hito (Good-bye My Dear) is a fast-paced somewhat nostalgic and sad melody. The ballad Harukaze 10 Years from Now. which he composed himself. gives a warm feeling. Sha la la is an energetic song that pushes you back. All of the lyrics for his first solo new single were written by the artist himself. and the three songs are filled with his life-size Kazuya Sakamoto.