Ryo Umekawa is a Japanese singer-songwriter and producer known for his unique blend of traditional Japanese music with modern electronic elements. His music often incorporates elements of folk, rock, and ambient, creating a haunting and atmospheric sound. Umekawa's lyrics are often introspective and poetic, exploring themes of love, loss, and the human condition. He has released several albums and EPs, including "Cold Sleep" and "MUJINA," and has collaborated with a variety of artists, including the Japanese rock band Boris.