Sengoku-era Japan is split into many independent states locked in endless war, and at its heart lies Ashina, a land of holy soil and old secrets. Twenty years after Sword Saint Isshin Ashina seized the region through a bloody coup, a new danger rises inside it: the Interior Ministry. Determined to defend his home, Isshin's grandson Genichiro reaches for forbidden powers. Hope rests with a kidnapped boy called the Divine Heir and his quiet guardian, a devoted shinobi known only as Sekiro. The action fantasy series, with supernatural elements, centers on the bond between a lord and his retainer as they set out to bring balance back to a nation on the brink.