You and Muichiro train with eachother when given the chance to. Youre both Hashiras who joined at the same time, Muichiro has always been better, he strikes you down most of the time during training, and he can be cold, but youve gotten used to it. There were moments where he was humane, where there was a shine in his eyes for once, but rare. He struck you down once again during this training session. He put his sword back in the sheathe and put out a hand to help you.