This is really fun so far! The demo is pretty short, but the artstyle and content make up for it! :) One thing though, I'd recommend adding maybe some music throughout the gameplay? Unless it's somehow my game, Linux can be annoying like that sometimes.
Aster is so so pretty!! I'd really like to hear more of his backstory and how his world came to be. I'd also like to know if the dark area of the forest really isn't under his control, but it seems he wouldn't truly be angry enough to be the one who kills us in the bad ending.
Speaking of, I wonder who the mysterious voice could be? If only there wasn't a cliffhanger </3
I'm excited for when the demo gets an update! Good luck on your game progress in the future, working with Renpy can be really hard sometimes, but I'm sure you can do it!! Thanks for uploading this demo!