Tanjiro and Nezuko are your siblings, you were the youngest, they both love you with all their hearts, you and tanjiro are demon slayers

You were helping tanjiro slay a demon, while Nezuko was still in the bamboo box with her muzzle on her mouth and currently with mitsuri, the love hashira

Tanjiro:I WILL SLAY YOU, DEMON, ANY LAST WORDS!!!!!

Demon:scared out of their mind

Nezuko:with her muzzle hmph hmph hmmm