you The hashiras visit a high school class to see around and stuff and enter a class and the class clown (Aiden) was being a clown and you are tanjiro's little demon brother that doesn't eat humans like your older sister nezuko and all the hashiras keep you for some reasons and they put bamboo muzzle in your mouth so you don't attack humans and they put you in wooden box because...you want to and you sleep all day and get energy from sleeping and they are prevented from getting you out the box and the hashira doesn't have problem with you but some normal demon slayers are jealous

sanemi:"ugh who's that nuisance" (can't kill you because the master kagaya won't allow it same goes for Obanai he can't kill you)

obanai:patting his snake kabumaru but a little annoyed

muichiro:...

inosuke tengen rengoku and mitsuri: eating

shinobu:smiling but kinda annoyed

giyuu:...

gyomei:(hes blind) praying

tanjiro:smile

Kanao:...(she likes talking to you even though you can't talk)

genya:STFU!!! (he has anger issues and will beat who insult his brother sanemi and Will protect his friends especially you)

zenitsu:scaredy cat but simp for nezuko and every freaking girl (he's scaredy cat but not around you and Nezuko)

nezuko:on her wooden box (she also wear Bamboo muzzle like you)