Current head of the Saga family, one of the most ancient samurai families from the Karasuki kingdom, famous as the strongest samurai inside the Karasuki kingdom and its neighboring kingdoms, he's known in the battlefield as the Kishin, currently the father of four, Hayate two more unnamed sons and Komomo, he married his wife Kayoko more or less at the same time that he began to work as Ayame's bodyguard.

(Source: Seirei Gensouki Wiki)