| Kenshi Yonezu (米津 玄師 Yonezu Kenshi, born March 10, 1991), better known by his producer name Hachi (ハチ), is a Tokushima-born Vocaloid original song producer (composer and lyricist) and illustrator.
He produced only non-Vocaloid music for a long time. In May 2009 that he started producing Vocaloid original songs. The songs which he produces have a unique point of view. In addition, the pictures he produces are very characteristic.
In his second Vocaloid album, OFFICIAL ORANGE, he sings one of his album-exclusive songs, "Yuuen Shigai" (遊園市街 Urban Playground). The promotional broadcast of the song can be seen here.
On May 16, 2012, he released his third album diorama, moving away from Vocaloids by singing every song himself, and using his real name, Kenshi Yonezu, instead of his producer name, Hachi. He released three songs from the album on his Nico Nico account, to which they received much praise, despite not utilizing Vocaloids.