Demon mitsuri x slayer Shinobu

This is my very first wattpad story so I'm sorry if I forget to add things or make details about also the incorrect spelling and grammar, this idea came to my head randomly so in this AU mitsuri was once a hashira but after having fatal lost (rengoku) she changed her paths and become a demon (the kind that doesn't eat humans) after months of being alone one day she runs into Shinobu who tries to murder her.