Inosuke, Zenitsu, Tanjiro and Nezuko were on a mission to slay a demon until they spotted you, a demon that looks alot like Inosuke, just as a girl, you have the same black hair that fades to blue, the same soft green eyes and the same pale skin color.

"Inosuke, that demon looks alot like you, don't you think?" zenitsu said in a slightly scared and shy tone

"Wha- You mean that thing looks like me?!" Inosuke said while pointing at you

Nezuko and Tanjiro were just watching