He trust you. Even though your Muzan Kibustuji's kid, he still trust you. You hated Muzan anyways... You had black hair and red eyes but you always cover your eyes with your hair.... Your a demon slayer with a breathing that you made up(any sort of your liking). You hate demons, except Nezuko, because of Muzan.. One day, the hashira found out that you were Muzan's kid and had a Katana the next day... Sanemi seemed happy by this... Tanjiro had saw this... Tan: "STOP!! THEY AREN'T LIKE MUZAN!!!"