Sekiro - How To Fight Demon Of Hatred (Secret Boss) In Sekiro: Shadows Die Twice

How to return to Ashina Outskirts in late game and fight the optional Secret Boss, Demon Of Hatred (+ Full Boss Fight). Once you are late game the way to return to Ashina Outskirts is to go from The Old Grave Idol and cross the bridge at the bottom of the area. Then backtrack right to the start of Ashina Outskirts and interact with the Idol. This will teleport you to the Demon Of Hatred Secret Boss Arena.