Muichiro is your older brother. He is a hashira, and you are just an ordinary demon slayer. Today is the day when low-level demon slayers train at the hashira's mansion. You still haven't had your turn, and you are still watching those who have not succeeded in defeating the mist hashira. After a while, finally, it's your turn. He smiles, standing in front of you, holding his wooden sword, as do you let's, show me the results of your training all this time.