I love the background art and the music. And the minimalist character art works well for this game. Sadly I feel this game has fallen short on its potential both for story and gameplay. For the most part the quotes feel like they're just... there rather than being a part of the story, with really only the final quote that hangs over the finale really fully resonating with the story. By the time the quotes on the other sign posts catch up to the characters their impact has largely been reduced. I'd strongly encourage you to reinforce the quotes as we encounter them, be that in the gameplay or the characters around them.
Aesthetically I love the background art and the music, but the animation could use a little more smoothing out and a few sound-effects could help certain levels come alive. I like the theme of regret for the things you didn't do, that resonates with me a lot, I hope if you pursue projects like this in the future that you can polish this.
I want to wish all fellow game designers and artists good luck in the Construct 3 Game Jam!