Welcome to weight gaming @gckoch.
This is nice to see. I agree with @ticktock gives me a bit of vibes of Fill Me Up, or Big Aspirations, even a bit of Expanding the Business Portfolio vibes, which is a good thing. I enjoy being able to choose if the MC is into gaining or not and not just having it be tied directly to progression and having some branching paths.
It’s a really simple thing but with so much text on a screen with something like Twine I really enjoy your use of color and format that helps break up text. Too much text in passages at once can be off putting depending on how the formatting is, and the way you’ve done it is a nice touch.
I figure you have plenty of content yet to come, but it would be nice to see some more events or ways to hang out with your roommates. Maybe dates, group events, running into girls at locations, or more random pop ups of things per weight stage. I like the background npc stuff, although I’m not as big into magic or instant weight gain. So, I wouldn’t mind the idea of having some of the side girls, or roommates pop up at locations or being able to directly take them out in a similar way. Also hoping to see some weight gain content for the cafe owner 
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I didn’t get to play through all of it but from what I did check out I noticed some issues. The first time you meet Dream there’s just some text errors. General text errors, a few due to format/coding issues, and either a bug or oversight on day two at the cafe.
There are periods outside of the quotations.
I assume this should say “Well, I feed off of desires.”
“Me” should be changed to “my.”
Missing periods at the end of sentences.
There’s a single quotation mark used at the end of this sentence.
Fattened has an extra ‘t.’
Both cases of the word ‘don’t’ are missing apostrophes.
Some text errors related to coding.
Isabel is used here where it should be Amy. Also audible is misspelled.
The formatting is off on the text here.
On day two the first time you can work at the cafe I had the same npc show up back-to-back when working with Eva. It was the fat girl in the gray hoodie.
Overall seems like a good foundation I like what you have here, I’m interested to see where you take if from there. Good luck with future development.