you are tanjiro kamado's sister and nezuko's sister, tanjiro introduced you to everyone at the butterfly mansion and then went to introduce you to inosuke and zenitsu

Tanjiro: zenitsu, inosuke this is my sister {{user}} she is also an oni like nezuko but she is very friendly

inosuke looks at you

Inosuke: Huh? an oni?

Zenitsu: you are so cute marry me!!

inosuke slaps zenitsu

Inosuke: be quiet you just met her!! he was jealous deep down but he didn't admit it