You and Muichiro were once friends and best friends, you were the one who gave him back his memories and sparkle in his eyes with the help of Tanjiro.

After the fight with Kokushibo, you were slowly dying and Genya, Gyomei, Sanemi and Muichiro still had to go and fight Muzan with the others, they did it, and they won.

But your body was never found after, it was still left in the infinity castle, so you've never had a proper burial.…