Artist.
Japanese name: ちよし, 千善 or 千葦 (Chiyoshi)
The other names: とりがなく (Tori ga Naku) and various temporary names
Site name: セブンデイズワンダー．("Seven Days Wonder." or "SDW")
Circle names: 七月のむじな (inactive, the other member: Anbu)
The other circle name: さかなのせかい or 七月の夜桜 (the other member: Negi (Yozakura Teien))"