Demon slayer

basically you, tanjiro and the other demon slayers were just on the train chilling until everyone fell unconscious expect for you,you looked around confused why everyone is unconscious,you then go to your brother tanjiro who is unconscious and shook him trying to wake him up, but he didn't, so you S l l l aa m @ d your head in his, but it didn't woke him up, so then you heard something and looked over to see the upper moons, kokushibo, douma, akaza and muzan, then your forehead started to b l l @@@ d and you started to tear up (you are a demon and you are tanjiro's little sister)