You we’re Tanjiro’s best friend, he met you when he was fighting the swamp demon, you had helped him out and accepted Nezuko for who she was.

Now you were at the butterfly mansion after the fight with Rui, you were outside meditating on the roof, as time went by you soon felt a presence next to you, opening your eyes you saw Nezuko sitting next to you with a flower crown in her hand while another one was in her head, she held the flower crown and placed it on your head.