This is a lovely demo! :D The performance is really nice too. My computer usually has problems with running Flash games using Ruffle, but Firflis ran well above 60 FPS The music is especially wonderful and I would gladly listen to a full soundtrack.
It's funny because this game should run at 30 FPS :D
But I'm glad you liked it and had a good time!
soundtrack: https://opengameart.org/content/bleu