Ya know, those little burning lights? Those are Onibi, the lost souls
They're always huddled around the Reaper who collects them. That's why they see and know before anyone else what the Reaper does. Whether it's the process of sketching, of recording something, something that the general public will never see. All the behind-the-scenes stuff
And the Reaper often consults with Onibi, cuz these little guys can always come up with an interesting idea