Manga
The Clamp version was serialized as Mystery DX of Kadokawa Shoten in 1994.
Intended to be a comedy, Owaru, one of the Dragon Kings, goes to Osaka to wakes snakes up. There are only three stories, and the story has not been concluded. As research, Clamp went to Osaka.
The manga version by Clamp is quite rare and had been previously very difficult to obtain. Because of high demand from fans, the chapters have been compiled into tankoban format under the title Sohryuden Genga-shu in 2004. Additionally, there is a manga short (only 4 pages) drawn for the Sohryuden drama CD, which had been included in Sohryuden Genga-shu.
In 2004, manga artist Megumi Koji (恵 広史?) began another manga version of Sohryuden as a comedy starring Owaru. Currently serialized in Magazine Special of Kodansha, it is Koji's debut work and has received positive reception and reviews.
Read more about this topic: Sohryuden: Legend Of The Dragon Kings