Untitled - Work In Progress

A submission for AnimePaper, it's a work in progress.

Basically, I extracted a scan from AP, extracted the blue butterfly from a persona 3 cutscene, added some lines to match the scan's style.

I'm going for a sketchy style, but I need your help designing the background, what should it be?

ADVANCED CRITIQUE ENCOURAGED, anything otherwise is, in a way, worthless, and I'll just delete it.
Seriously, I just need helpful C&C