Artist.

Japanese name: うろ (Uro)
Pixiv nickname: うろほ゛ろす (Uroboros or Uroborosu)
Circle name: 日乃景女学院 (the other meber: Karashima Suima)

See also

• Pixiv account: http://www.pixiv.net/member.php?id=1488086
• Circle website (dead, shared with the other member): http://hinokage.web.fc2.com/