Toru Okada of moonriders passed away on February 14, 2023. A romantic and avant-garde keyboardist, composer, and producer who left behind numerous masterpieces. There was a song that Toru Okada dreamed of completing. That song was entrusted to Nanaco Sato. I wanted him to write the lyrics and sing it. Toru Okada's posthumous work, named "UNICORN ", strangely became a requiem for Toru Okada. Yusuke Sato, a young genius artist who has continued to actively support moonriders even after Toru Okada's death, produced the sound. A sad and beautiful duo of Nanaco Sato's singing and Yusuke Sato's piano has been completed.