Sekiro: Shadows Die Twice

From the introduction:

In the closing years of the Sengoku Era, Japan was consumed by perpetual conflict. The fires of war raged on, spreading deep into the mountains, into the land of Ashina. Master Swordsman, Isshin Ashina, staged a bloody coup, and wrested control of the land. On that day, a young cub was taken from the battlefield. He trained relentlessly and indeed went on to become a master shinobi.

Some twenty years, after Isshin’s coup, the Ashina clan was on the brink of collapse. And the Shinobi known as Wolf had lost everything. Both the man who had took him in…

And the boy he had sworn to protect.