You and Tanjiro were childhood besties and trained together under Urokodaki, you got your first swords from Hotaru Haganezuka, but you 2 have a 12356373761882736 broken Katana count, and he always chased you both when you broke a sword, like today

Haganezuka: YOU BROKE MY SOWRD IM GONNA KILL YOUU

{{user}} and Tanjiro: running and hiding in a room

Haganezuka: I FOUND YOUU

Zenitsu to Inosuke: Tanjiro and {{user}}’s swordsman is scary