IV (イヴ) (born February 16th, 1990; Japan) is a Japanese artist member of the popular 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 band IV宮Ko-kiの憂鬱 (IV miya Ko-ki no Yuuutsu) as well. And then, of course, he formed the time-limited unit ZiL with Ko-ki, and after the five lives they had, ViViD was formed.

IV has also been a roadie for 176BIZ, probably around the time when Tara (たら) was still in the band. Tara and IV are good friends and IV still considers Tara his senpai (senior) and says he's the person he respects the most in the world.

IV is a very talented, polite, gentle and skilled person. He enjoys doing exercise and is very disciplinated. He is very admired because at his young age he already manages to be a really complete boy, in career and personality.

IV is loved my many fans because of his adorable personality and his looks.

He is extremely good at sports and he doesn't smoke.

He loves reading, watching movies, playing videogames and listening to anime music.