A long running series of Touhou doujinshi by the circle Ao. Chapters ordered by release date as found on https://thwiki.cc/青
142 views Touhou Blue Book (Doujinshi) Ch. 90 Illusion of CalmA long running series of Touhou doujinshi by the circle Ao.
69 views Touhou Touhou Blue Book (Doujinshi) Ch. 79 Roku Yu no Setsu