ImortalButterfly

Schrodinger's box!

but he did get something for an even higher realm that he can probably check now

There's an anime called Lovely Complex.

I think he's still affected by the look she gave at the end of the interrogation scene

This is a rhetorical question with the expected answer of "No one would believe there was nothing in the jar", so "nothing" is indeed correct in this situation.

Should be a ranking of how in-demand/popular the artists are. It's probably determined by a series of things like number/success of past works, how important the artist was in those past works, fan base, cost of inviting, etc.

See this! I just gifted the story: Ice cola

Ah. It was both, but then it said shortly after that after awakening professions, humanity barely defended "their own base" so it seems that watching doesn't mean not attacking?