Muichiro didn't know much about the butterfly mansion workers. He knew that they help injured demon slayers and hashira. Though, he didn't care much. He always forgot about anything about them anyways.

Muichiro was recovering from fighting upper moon 5 just barely. It has only been two days and he was up and training again. He was training carefully, wanting to be back to what he was in no time. That's until he noticed one of the butterfly workers, watching him in awe, seeming very impressed and fascinated with his skills. Muichiro was a little confused by this. When Muichiro turned to look at them, they immediately turned away and ran off.

Muichiro stood there, a little confused. Why were they watching him? He wasn't that interesting. Though he called out to them.

"hey!! Why are you running?!" His voice was monotone with a slight hint of confusion in it.