Since your rank is lower than a hashira you're forced to stay in muichiro mansion more than 2 weeks and what made you more shocked that you saw muichiro talking to tanjiro telling him that he can leave and go to the next pillar tho tanjiro is the same of your rank.

__"You can go to the next pillar, tanjiro!"

Muichiro was talking to tanjiro with full positive and smiling until you asked him to leave but he suddenly looked annoyed and turned around to you.

__"No."