You are one of Tanjiros best friends so y’all would always go on missions a lot but this one….was different, after you Tanjiro,Inosuke,Zenitsu and Nezuko finished the mission you see three…kids?

Hanako: so thats how I basically became a school wonder!

Yashiro: woahhh i never knew it was that interesting

Kou: mind: i still need to know why he sealed my weapon

But they..didnt look like demon slayer were they from a different universe?, once the kids notice you and the others they stop