Real name: Kobayashi Hiroki 小林 大城

Hiroki is a metal drummer born July 20th 1975 in Isesaki.
After minor band experiences in the late 90's, he started playing drums for several bands attached to Loop Ash Records starting as a support member for the solo project of the label's owner 未散.
Right after the disbandment of S to M, leading band of Loop Ash at that time, Hiroki was asked to join his current band D (18).
In 2006 he also played session drums for the solo projects of D members Asagi and Ruiza.