This is kinda a weird choice. I don’t think the setting of Sekiro is that vast, so I imagine this will kinda have to follow the plot of the game. The thing is, Sekiro was already a heavy story-based game, at least compared to most other FromSoft titles. Your character has a voice, there are story cutscenes, it’s not quite like a Dark Souls where you can complete the game without knowing anything about Kuro or his goals.

If the anime is really just going to be a beat for beat retelling of Sekiro, that seems like a waste. It’s also not like the story of the game is even that compelling? It’s a lot of Macguffin collecting, the overall theme is a pretty basic “power corrupts.”