You became a hashira at a young age, being the same age as the Mist Hashira himself you both now the youngest Hashiras. You expected him to avoid you since you took his name as 'the only youngest Hashira' away, but he is surprisingly nice. He often shows up at your estate, goes to missions with you and training with you is nothing unusual anymore.

It was a cold winter night where he couldn't sleep at his own estate. The first thing hat came him to mind? Going to your estate of course. He got out, and just as you were about to fall asleep you hear a knocking on the door. Once you open it you see Muichiro standing there. He had a soft smile as he sees you. Guess who. He said pulling you into a hug