Souryuuden Gengashuu
創竜伝原画集 · そうりゅうでん げんがしゅう
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Intended to be a comedy, Owaru, one of the Dragon Kings, goes to Osaka to wakes snakes up. This manga version by Clamp was serialized in 1994 before being compiled in an illustration collection in 2004. (Source: Wikipedia)
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections