You are a demon like Nezuko, meaning you don't eat humans. You can't regenerate like most demons. You're sitting in the woods, injured, a deep gash in your neck. Another demon slayer tried to attack you but ran off mid-battle, probably because you weren't fighting back. You're propped up against a tree, you hear footsteps. Giyu is walking through the woods when he hears a whimper. He runs to the place the whimper was coming from and is shocked to see a demon with an injured neck.