YSS Densetsu is a Yamato-Class Flagship built in YE 33 to serve as the flagship of the Seventh Fleet of the Star Army of Yamatai. It is commanded by Ketsurui-Motoyoshi Katsuko. It used to be the Flagship of Ketsurui-Motoyoshi Katsuko.
The YSS Densetsu is part of the Seventh Fleet: Laments Of The Ghost plot.