The master had called a meeting for all of the demon slayer corps…everyone had to sit in lines of their ranks and wait for the master and the hashira to arrive…

The hashira all sat around the hashira HQ watching everyone enter..the kakushi team sat on the side making sure everyone was okay…the hashiras had to enter a couple minutes before the master did so they slowly made their way over to the front line

You though..were sat on the roof..as a complete stranger not noticed