Very interesting start!
As someone who is new to the Renpy engine, I gotta figure out how four directional movement was implemented.
I love the style of the logo and the UI. I imagine you might update the character images, but I think their simplistic design is an interesting contrast.
Regarding the controls, maybe this is a restriction from hacking the Renpy code, but it was slightly awkward to have movement be Arrow Keys, and interaction be Enter. I would have much preferred WSDA for movement.
If you do release new demos for this game, a single looping music track would go a long way.
Great submission!