Googling for “artist led projects, tokyo” eventually led me to Kandada. Their website is in Japanese (of course!), but armed with their English language map and this blog entry giving an interesting snippet of background information, I went to have a look.
Secondly, completely getting into the spirit of passing the sketchbooks on to other artists (!), the director volunteered staff member Ueno Masao to participate on Kandada’s behalf.
Welcome aboard Masao!