Since the game is both Sekiro and DS inspired, I had some ideas for lore. I know they probably already have written it, but there’s a chance they haven’t, and even if they have, I still would like to put my ideas out there for them.
Slayers: Slayers are travelers. Slayers are often viewed as a myth, a fairy tale, as they are as quiet as the whistle of the wind. Common folk view them as angels, that come down to purify any issues a town is having with supernatural beings.
In reality, Slayers are hired travelers that kill demons in different areas. They are constantly traveling hunting every demon they come across.
Demons: It all started overnight. When the first demon awoke from his slumber. He was a crossbreed, an abomination, and had a natural hunger for human flesh. He was immortal, and sought to share his power with others. He had children, which is every demon people see on earth today.