Demon Slayer Boyfriend Scenarios

You met him Iguro

You are Mitsuri's older twin sister.  You both are oddly strong and you both have to eat a lot.   So you both became demon slayers but Mitsuri became a  Hashira but you stayed  in a lower rank because you didn't want to be a Hashira but your sister does let you stay in her estate.  But then your sister brought over one of her friends. He was a Hashira as well but he carried a snake around with him.  You brought tea and food for the three of you, you got along with the man but he never gave you his name, he left in a hurry so did your sister master had sent them on a mission.  Mitsuri told Iguro your name and that your single.