Kunishige Rokuhira

Chihiro's father and the blacksmith who forged the Enchanted Blades. Prior to the Seitei War he worked as a weapons dealer, though, due to being selective with whom he sells his weapons to, he barely does enough to survive. Using Datenseki—the volatile ore only his unique vision could stabilize—his blades bring an end to the Seitei War, though at the cost of hundreds of thousands of lives. After the war, Kunishige confiscated all six blades and went into hiding, eventually fathering Chihiro. Feeling regret over the death and destruction caused by the blades, Kunishige, with his son Chihiro, crafted a seventh blade, Enten. Fifteen years after the war, he was assassinated by the Hishaku and his blades were stolen.

(Source: Kagurabachi Wiki)