There isn't a ton to say, since this is a prototype, and it seems like there's a lot more planned that didn't make it in.
On what is there, I really like the "manager" design! The illustration style is nice, I imagine Astraea's design might be flashier and more detailed as the story/action progresses. The font on the dialogue works, but is maybe a little thin. I still found it readable. The "name" text however, needs a box, dropshadow, or thicker font. It's currently hard to read over the BG image.
Nice start! This seems like it has some promise, I hope you keep developing it!