IV (イヴ) (born February 16th, 1990; Japan) is a Japanese artist member of the populair JRock band ViViD. He is the band's bassist and the composer of most of their songs.

IV's first wellknown band was キス&ネイト (Kisnate), formed in October 2007. Kisnate was around until February 2009, but IV left the band already in July 2008. The band released at least three singles during the time IV was their member.

After Kisnate, IV was a support member for 氷男 (Iceman), オーダーメイド (Ordermade)'s vocalist Haru's project, and he occasionally had lives with his and Ko-ki's session...