xatlor

So a lot of muscle growth stories feature characters getting dumber, I'd love to read some stories about someone getting more intelligent during the story, or are smart to begin with Any recommendations?

I dont think that there is more. The story hä a nice end and Google cant seem to find any other parts

This is probably not what you're looking for, but kind of similar: https://www.cyoc.net/interactives/chapter_142828/branch_142828.html

Hey there, I'm looking for stories similar to "A. I." by Corwin and "Skin Tight" by Dream Big, where someone is growing with the help of an artificial intelligence (or any kind of machine), maybe even against their will.

You are looking for "forced growth", it's a really good story indeed https://www.metabods.com/stories/forced-growth