Artist.

Nickname: 夕霞 (Yu-ka or Yuuka)
NicoNico nickname: いーえむ。 (Iiemu.)
Circle name: O.T.Kingdom
Site name: 天球儀 or O.T.Kingdom

See also

• Home page: http://hotateout.dyndns.org/~OTK-CG/
• Pixiv account: http://www.pixiv.net/member.php?id=417456
  (The artist once had another old pixiv account. -> source:pixiv/ruri1102/ )