I understand that this version of the game (the Twine version) isn't going to last much longer, but I figured I should throw my two cents in after spending multiple 4+ hour sessions with this game, in the hopes that it shapes the Unity version.
First of all, the core concept is entertaining. An incremental game about making boobs bigger is always going to be fun, especially if it actually lets you get up to some truly ridiculous numbers/sizes. And I appreciated the nods to Yuri My Beloved, with the massage instructor whose wife is visible in space.
The game is... not really up to snuff, though. There are some supremely frustrating bugs (save files not working properly, purchases that set your milk total to the negatives) and progression is painfully slow. Like, unbelievably slow. Even skipping the pleasantries, once you hit the third boob pic, that's all you're getting for a really long time. And if you decide to take an extra dose with your first boob coin, you're spending hours just grinding back to that point. This wouldn't be as bad if the game ran while the tab was minimized, but it doesn't. I'm assuming that's a limitation of Twine, though.
There's also not much to give an appreciation of how big the boobs are getting without the pictures, either. A text description that's always present would help conceptualize things beyond a vague 'milk' number. The story sections are pretty short and extremely infrequent as well, and could use some flavor text on the side to help with that.
Overall I think the main thing is that the first boob coins need to be more significant than a 25% boost to the two worst buildings in the game. Something like a starting amount of milk that's enough to buy out the 'Skip the pleasantries' buildings, or a multiplier to click power. I'd also appreciate if the click achievements had lower requirements, but that issue would be alleviated with better saves.
In any case, I'm looking forward to the unity version. This is a good start, it just needs some more to make it feel more worthwhile.