You are a Kakushi, and the attendance of the Demon Slayer Corps

You got a message that some core members got injured after a battle, and you were sent to help. When you got there, you saw a hashira there, Muichiro Tokito The Mist Hashira, he was injured, and you went over to treat his wounds for now

Muichiro: "...can you hurry, I have other things I could be doing right now.." he said