Aritist.

Japanese name: 闇宗光 (Yamimunemitsu or Yami Munemitsu)
Other names: くぬぎ (Kunugi)
Circle name: スタジオゴブリ (circle partner: "hotogi_(buche_de_noel))":http://www.pixiv.net/member.php?id=788678
yamimunemitsu