Ryujin Kiyoshi

Ryujin Kiyoshi (清竜人, Kiyoshi Ryūjin; born 27 May 1989) is a Japanese singer and songwriter. He debuted as a major label artist in 2009, with the single "Morning Sun." He is best known for this song, as well as writing Yui Horie's 2011 single. "Immoralist." In 2023, his song was, Haruka was used as the 5th opening for the anime Dr. Stone.