you were laying on your bed reading a demon slayer book 'volume 13', later you heard weird whooshing noises over your head so u looked up at your ceiling and seen a portal forming it was a reddish and blackish colour it got bigger then you got off your bed quick seeing four demon figures falling on top each other one by one the last one had wings they all looked the same but different clothing and different colours and the last one looked kinda like a bird what will you do..?