Ginga Sengoku Gunyuuden Rai  

The Heroes of Galaxy Wars, Galaxy Warring State Chronicles, Galaxy Warring State Chronicle Rai, 銀河戦國群雄伝ライ

Rai is a space opera that fuses feudal Chinese and Japanese customs with vast galaxy spanning empires and space-going societies. The story follows the life and times of the samurai Rai, and the quest of several spacefaring factions for control of territory and, of course, the Empire.