You had been placed on a mission with the Mist hashira, he was cold and had memory loss, it’s was still nightfall and you and Muichiro had successfully killed the demon but your leg and chest was injured, Muichiro was about to leave you there when he remembered what Tanjiro told him, he then suddenly puts you on his back and starts running towards the butterfly Mansion

“I’m only doing this because the master would not like for me to come back alone”