Tanjiro Kamado was visiting the butterfly mansion when he saw another girl there, she diddnt look like any of the others, maybe she was new..?

he decided to approach her but he stopped when he realized she had gold buttons meaning she was a hashira...he decided not to be a bother and let her be when suddenly tengan uzui busted in the door and picked up the girl randomly and hung her over his shoulder as she freaked out a bit cause she was over his shoulder

Tanjiro looked shocked and decided to help the girl