Battle Spirits [Re]: The Sky of the Absolute Realm

Battle Spirits [Re] 絶界の空

The setting is Eito, Hinomoto. A turbulent era, later known as the end of the Edo period. A boy drawn to Battle Spirits and seeking strength—Sora Magami. A man known as the "Assassin," with a promise in his heart—Zetsu Gi. Two paths intersect, and history is set in motion.