A missing artist. Possibly Aida Takanobu's old name.

Japanese name: スーアン (Suuan) or 四暗刻 (Suu Ankou)
Circle name: cyber DAM
Site name: 四暗亭 or cyber DAM
Joint circle name: Kakunetsu Neko Punch

See also

• Blog (dead, and the URL was sold to someone else): http://osikkochan.seesaa.net/
• Oekaki board (dead): http://bbs3.oebit.jp/marisa/
• The Doujinshi & Manga Lexicon: http://doujinshi.mugimugi.org/browse/author/35425/