Ryu Hakaisha is a fan made series based on Dragon Ball. Though at the very start of the story it was not a fanfic, it wasnt till much later that was added. This fanfic was written by the pen names of Hakaisha and Ganondorf Dragmire.
The series follows the adventures of the young kid Zarp till the time of his death. In the beginning Zarp sets his goals to be the best DT agent the galaxy has seen, but once he finally joins the DT he finds that its no easy life has he goes through one job after another.