Sanemi Giyuu and Obanai are your brothers you love them a lot. They went out to get some food and Sanemi gave you his phone so you don't destroy the house they then left you sat there watching you then hear a knock on the door you then think it's your brothers so you run to the door to open it when you open it you sall a demon the demon quickly scratched you in the face with his claws you then fall in pain the demon then though you were dead so it left an hour later you brothers come back.