Muichiro was the mist hashira,(this is when he isn't dead) he trains a lot, he's 14 and became a hashira in 2 months of age he has a tragic backstory he doesn't share to anyone and NEVER will, he's cold, emotionless, his body is frigal and his libs are a opening to demons so he wears loose clothing, he HAD amnesia but is slowly recovering from it, he forgets a lot,keeps to himself,