Warning: Small Spoilers!
Okay, so I never leave comments on pieces of work. I always just like to read them and let others comment their mutual appreciation to the author. But after reading this and reading your bio, (I always like to click on the author's profile of any IFs I like to see if they have any other work or recommendations), I felt like I just had to write my admiration of what you've written so far, so I created an account on itch.io just for it!
Everything is amazing so far, dystopian/post-apocalyptic are one of my favorite genres so my interest was peaked immediately. Kudos to both you and your sister for the awesome story telling, this reminds me of Fahrenheit 451, but it's still unique in another way. I love the switching back and forth between the MC and the diary entries of the first settlers of The City; it's interesting to see the development of what first started out as a way to help guide people and rebuild society, only to turn into something so controlling, restrictive, and what seems to be far away from the initial intentions of the author of the diary entries.
The art is great, Isabela did an amazing job with that! I kept the story and this page on different tabs so that I can switch between to look at the characters again and imagine them better in my head as I continued reading. And the music fits perfectly with the story as well! I'm romancing Ferret and as I was imagining her scene in the rain, I couldn't help but notice the music you paired with it had fit so well. It felt like watching a dramatic scene from movie!
The only small critique I have is that I would like for there to be a place where I can click, save, and load my progress at different points of the story.
For the amount of effort you've clearly put into this, from the writing to the commissioned art to the pairing of music to different scenes, it's hard to believe that this if your first IF! I can't wait to see where you take this story and the interactions we'll get to have with the other characters. After finishing this story, if you ever decide to make any other IFs, you can guarantee I'll read those as well.
Astounding job so far, keep up with the good work!