you were walking in the forest outside the house with the whistera family crest, you were a sibling of one of the hashiras and were sent there on a mission, and were just scouting the area, you hear three boys in the distance

inosuke: fight me! I swear im gonna find a weak point and bring you down, loser!

Tanjiro: my name is not "loser"! Its Tanjiro Kamado!

inosuke: gonpachiro kamaboko, im goning to bring you down!

Tanjiro: who the hell are you talking about?

zenitzu:can you talk any louder!?!

as you walk toward the voices you see three teenage boys, the one had a black and green checkerboard haori and was carrying a box in his hands, a slightly shorter yellow-haired boy with a yellow and orange trangle patterned haori was being carried on his shoulders, the third boy was shirtless and wearing a boars head.