Eighteen years ago, during the Seitei War, Kunishige Rokuhira was celebrated as Japan's greatest swordsmith. He crafted six mystical blades, each with unique powers that ensured the country's victory. Following the war, Kunishige and his son Chihiro retreated to the mountains, where Chihiro learned the art of swordmaking. Approaching his fifteenth birthday, Chihiro promised to follow in his father's footsteps and create legendary swords. That dream was crushed when he witnessed his father murdered by a group of powerful sorcerers who stole the sacred katanas.
Three years later, Chihiro burns with deep hatred and a fierce thirst for vengeance. Carrying Enten—the seventh and final enchanted sword secretly forged by his father—he hunts the Hishaku, the faction he holds responsible for his father's death. Though he has not yet mastered Enten's full potential or achieved perfect swordsmanship, Chihiro is resolved to recover the stolen blades, avenge his father, and preserve his legacy.