King Gnu  King Gnu is a Japanese band. They were formed in 2015 as Srv.Vinci, renamed to "King Gnu" in 2017, and major debuted under Ariola Japan in 2019. The group's main composer is Daiki Tsuneta, who also performs as part of the creative collective Millennium Parade. In 2015, Srv.Vinci was formed. In 2017, they renamed themselves to "King Gnu". They then performed at the Fuji Rock Festival in 2017 and 2018. In January 2019, they major debut under Ariola Japan, and released the hit song "Hakujitsu", which ranked No.4 in Year-end chart of Billboard Japan. In October, they released "Kasa" and won their first No.1 in Billboard Japan Download Chart.