https://www.amazon.com/Annas-Formula...NM8XEXNATNF8SC
HIGHLY recommended, despite having no real "on screen" transformation.
Let me say what I love about this story, it doesn't make me feel like a creep over it.
One of the most annoying things about IB, BE, etc. stories is the tendency towards acts lacking consent. Many stories have a party who is transformed unwillingly, and forcibly. I always prefer willing participants (Want to have a sexier body? Sign here.) or incidental ones (meteor fell from sky with glowing effects!) While punishment through transformation can be okay (Revenge can be sweet) taking sexual advantage as revenge does not sit well with me.
Long story short, I don't like rape fantasies. They make me uncomfortable. And a LOT of stories involving IB and related transformations are flat out rape fantasies. No "blurred lines". There are some others WITH blurred lines as well. but there are a sizable portion where the protagonist transforms a thinking person into a bimbo sex slave unwillingly.
Now let me be clear, I don't think that ANY fantasy is wrong. NONE. I only judge people on their actions, not their fantasies. But for me, I find such things in my story uncomfortable at best, and dealbreakers at worst.
This story not only has the main object of transformation, Anna, be a willing participant, but the one who initiates it, and the protagonist is the one unwittingly being buffed up, but it actually ACKNOWLEDGES the concept of consent and has an actual analysis of it.
The character who caused the unwitting transformation is reprimanded and actually sincerely apologizes. This story not only talks about consent, but analyzes the random encounters the protagonist has with several women and how they were, after analysis, consentual by both parties.
This may not be important to most people, but it actually made the read more comfortable and in the end, erotic for me. I like it when the women in the story are into the transformation along with the guy. What's more, the transformations also empower, not enslave, which I also like.
As for the transformations themself, they are sadly slow and happen basically offscreen. However, the actual changes are IB material to a T. Anna doesnt just get bigger boobs, she becomes taller, curvier, with wider hips and better muscle tone, she gets prettier in her face and becomes more confident and sexier to more than just the protagonist, and to top it all off she becomes smarter too, which actually is HOW she transforms physically (She makes herself smarter first THEN sexier).
The descriptions are wonderful and erotic, even the non transformation scenes talk at length about what he noticed changed and that is erotic in itself. The prose is good, the story is relateable, and it even is a LITTLE romantic in how the characters struggle but eventually find each other.
I hope this author writes more along these lines, and includes some on screen and quicker transformations. Ideally my favorite transformation is fat loss, when a chunky girl goes from fat to a six pack, and the guy gets a similar treatment, but beauty enhanced, breasts enlarged, all that stuff is great.