The King of Sakura who married the last survivor of the Sacred Empire and this union was born Sheemon, she being the last descendant of the Sacred Empire. Shuzen can not defend your planet from the invasion of the planet Goyo, so he sends his daughter away, and left alone in the castle when it appears Rai, they fight with their swords in the midst of the flames that surround the castle, Sheemon returns just to see how Rai killed his father, and Sheemon is taken captive by Goyo vowing revenge. Shuzen head is cut and delivered to Danjou.

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.