How to find and beat the Bloodedge Demon in Nioh 3

The Bloodedge Demon is the most unique boss in Nioh 3, since this yokai scales based on how many revenants you've killed—those red spirits of other players that you can summon for a duel. If you've been very liberal with your friendly summons (the blue ones), then you've likely had to kill a lot of angry revenants to recoup your Ochoko Cups. Because of this, the Bloodedge Demon can be a terror.

But before you can even fight the Bloodedge Demon, you need to know where to find it. You've no...