PurpleGeth said:
Sato only does the characters from 0:08 to the end

Marketani said:
i actually thing his part starts a cut earlier with pink kimono lady at 0:06(forgive me for not watching bungo)

PurpleGeth said:
Mori and Elise (cut before umbrella lady) is also him on second look. Her arm anatomy and Mori's glove gives it away. Maybe he didnt do his own genga for these two cuts - it's not as clean as 0:08 to the end.

Everything in this upload is in the gengashuu - Just a stab in the dark but off the top of my head the genga for the 1st bit looks like Tokuoka's handwriting but I'll have to look into that a bit more
Edit: Yeah should definitely be Tokuoka