Artist. Formerly tagged as zerostyle09 or Tsukigami_Chiruyo_(zeroko).

Japanese name: ぜろこさん (Zeroko-san) or ぜろこ (Zeroko)
The other names: ぜらちん (Zerachin), ぜらちそ (Zerachiso),ぜ。 (Ze.), ぜら (Zera), 月神 散夜 (つきがみ ちるよ, Tsukigami Chiruyo) or 古明地 空 (Komeiji Utsuho)
Site name: れうにくるす。
Old site names: "日吉和菓子（2円）" or "納豆（2円）"

See also

• Pixiv account: http://www.pixiv.net/member.php?id=9444201
• Niconico account: http://www.nicovideo.jp/user/37944990
• Niconico Seiga: http://seiga.nicovideo.jp/user/illust/37944990?target=illust_all
• Privatter account: http://privatter.net/u/mmmm_extacy
• Twitter account: http://twitter.com/mmmm_extacy

• Old accounts:
• Drawing board post archives on Yakkun.com: http://pic.yakkun.com/pic/u27100
• Blog (1): http://blogs.yahoo.co.jp/mmmm_extacy/
• Blog (2) (closed): http://blogs.yahoo.co.jp/xanxus_lover/
• Blog (3) (dead): http://zerokosan.blog.fc2.com/
• Old home page (moved): http://id51.fm-p.jp/401/nclear/
• Niconico account: http://www.nicovideo.jp/user/20808385
• Niconico Seiga: http://seiga.nicovideo.jp/user/illust/20808385?target=illust_all
• Pixiv account (1) (deleted): http://www.pixiv.net/member.php?id=8698072
• Pixiv account (2) (deleted): http://www.pixiv.net/member.php?id=3004303
• Twitter account (1): http://twitter.com/9ltn
• Twitter account (2): http://twitter.com/y_s_yips
• Twitpic account (1): http://twitpic.com/photos/9ltn
• Twitpic account (2): http://twitpic.com/photos/y_s_yips
• Twitpic account (3): http://twitpic.com/photos/zerokosan
• Yfrog images (dead): http://twitter.yfrog.com/user/9ltn/photos