An original anime project by Yamamoto Yuu, related to the early 1980s J9 trilogy consisting of Ginga Senpuu Braiger, Ginga Reppuu Baxingar, and Ginga Shippuu Sasuraiger that aired from 1981 to 1983. This new J9 anime is loosely based on the Water Margin, a Chinese novel.

(Source: AniDB, edited)