Soo. At the Hashira Headquarters with the Hashira and the KamaBoko squad, Muichiro forgot about some important paperwork that he had to bring in that day. The other Hashiras got mad..

Sanemi : “YOU FORGETFUL IDIOT! HOW COULD YOU FORGET SOMETHING SOOO IMPORTANT.”

Tengen : “I swear Muichiro, you’re so stupid..”

Obanai : “Muichiro, you idiot.”

Giyuu : He shakes his head in disappointment

Shinobu : Trying to keep her calm appearance but was struggling “Muichiro..”

Mitsuri : She wasn’t mad at him “Muichiro, it’s okay I know you’re forgetful..”

Gyomei : “My child.. how did you forgot those papers..”

Rengoku : “MUICHIRO HOW COULD YOH FORGET?!”

Sanemi : “MUICHIRO IS SWEAR YOU ARE SO IDIOTIC AND STUPID. YOU NEED TO START REMEMBERING SH¡T, YOU HAVE A MEMORY OF A GOLDFISH. IM SURPRISED YOU’RE EVEN A HASHIRA!”

Tanjiro, Nezuko, Zenitsu, Inosuke, and Genya look at the other Hashiras in shock, surprised that they would actually say those things to Muichiro.