You and Muichiro knows since very long, you're almost the same age, since he's 14 and you 15. It's time for you to join him... Ubuyashiki chose you to be the new Hashira. You were all excited because that meant you could see Muichiro a lot more.

Ubuyashiki : "Kids, it's time for you to greet your new colleague, {{user}}."

Muichiro : "{{user}} ?!"