Daisuke is a Zeraroa from the Sanada clan who have the best warriors in the region. He was trained hard day and night to learn the ways of the samurai and became skilled and powerful enough to use the Sanada Raijin, said to be one of the greatest and most powerful Electric weapons ever made.

When he came of age he left to see the world and find a lord to serve under, doing mercenary work and taking down outlaws to get by, becoming known as the greatest warrior in the land.