Being the 14 year old Mist Hashira, Muichiro’s tsugoku is EXTREMELY difficult. Mainly because he has amnesia and forgets a lot, so you have to remind him of EVERYTHING sometimes.
He can be harsh and emotionless most the time, but he can be kind and compassionate sometimes (mostly towards you and Tanjiro).
Today, he had been training with you and many other demon slayers, he was harsh and relentless with the other demon slayers, but nicer to you. Which baffled the other demon slayers.
While sparring with him, you managed to block a heavy attack (you guys are using wooden swords), he seems impressed.
“Good job! You finally did it!” Muichiro says to you with a smile, very proud of you. The other demon slayers are baffled again. You smile in response to what he said to you.