Chairo is one of Japanese SMF team members and also developer of Super Mario Flash 2 Ver.C. He is not active as Hiro, however, he is the first one who has succesfully added new features without causing new glitches.
Like some other people, he hasn't written any rates and published levels, but players can still play his levels here
All games and hacks are added to this page made by Chairo.
Chairo is one of a few active users who has friends from it's country only (Japan, in this case). His friends: