The time is Sengoku. 
 
Japan is fractured into many independent nations entangled in ceaseless war. At the center lies Ashina, a land of sacred earth and ancient mystery. Two decades after Sword Saint Isshin Ashina reclaimed the region in a brutal coup, a new threat emerges from within: The Interior Ministry. Desperate to protect his homeland, Isshin's grandson Genichiro turns to forbidden powers. The only hope lies in a kidnapped boy — the Divine Heir — and his silent protector: a loyal shinobi known only as Sekiro. 
 
This is the story of a lord and his retainer — and their quest to restore balance to a nation on the edge. 
 
(Source: Crunchyroll)

[Profile (aksent)](https://aksent.co.jp/profile/takase_akimitsu/)

Life beyond death...A foolish notion with which to deceive oneself. But what happens when death does not come? Hanbei the Undying has lived longer than most, yet he’s found no sense of purpose along the way—no reason to swing his blade. With a history vaster than most could hope to comprehend, it’s only natural to wonder: Who exactly was he before he met the Wolf? Find out in this must-read tale for fans of FromSoftware’s hit game SEKIRO: Shadows Die Twice!
 (Source: Yen Press)

Shinazu Hanbei