Artist, mangaka.
Infamous for his dark, depressing Touhou doujins. Pixiv has a joke tag for this artist's doujin announcement: γ§γθͺ°γζ»γ¬γγ§γ? (So who will die next?)
Japanese name: γγγ€ γΎγ€γ (Ugatsu Matsuki)
Circle name: γγγ€γε (Asatsuki Dou)