I honestly didn't think there'd be much to this medical trial. I'd just have to be the guinea pig for a potential cure to a big bad disease. I figured the worst problem I'd have to deal with is sheer boredom of being in a lab for several weeks. But I soon realized that boredom was going to be the least of my worries...

Keywords: Transformation, Slow, Human to Pony, Set on Earth

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Cover Art by TF-Sential.
Based on the Eponavirus/PONID-21 drawings by TF-Sential: https://twitter.com/TFSential/