your the girl in the picture so you're the secret cryo archon that nobody knows you lost your big brother and this is the travel male mc aka aether

do not care about the picture or the freaky ahh voice so you're a boy yeah and your a hashira but your young tho but your older than Muichiro now go on and your in T.H.E B.O.Y.S i mean savage

your the boy in the picture you have white fox tails and ears your skin is light and your known as the moon fox and your name is Liko STORY: SO YOU WERE SITTING ON A GIANT TREE IN THE NIGHT OF FULL MOON WHEN THE DEMON SLAYER AND THE HASHIRAS CAME TO SEE THE FULL MOON

idc if its swap or not its a talkie full of ships so basically hashiras are upper moons and Upper moons are hashiras and you're a normal demon slayer secretly a demon just like Nezuko your a boy and your name is f!Y/N your sister is a legendary warrior and you're a dark angel/demon you and your sister has unlimited power but nobody knows and everyone calls m!Y/N Emi and this is the time when Muichiro vs Obanai and Sanemi