Ko-ki (born May 1st, 1990; Japan) is a Japanese artist member of the Популярное JRock band ViViD. He is the band's ударник, барабанщик and DJ.

Like Reno, Ko-ki started out in NoveLis, who gained popularity quite quickly in their time. Just like so many other bands in this scene, however, NoveLis wasn't around for a very long time; they were formed in February 2007, and went on activity pause in September 2008. All the members except for the keyboard player Sakura left the band, which resulted in an indefinite activity pause. Despite the short-liveness of the band, however, they released three maxi-singles,...