Derpy Hooves suffers from a severe hormonal imbalance; though really, suffers isn't quite the right word. Whenever she breastfeeds, her breasts get bigger and milkier. As far as she's been able to figure out, there is no upper limit - she's just going to keep growing forever. Still, inconvenience aside, she's managed to create a fairly comfortable life for herself, settling into an admittedly weird niche in Ponyville's local culture.

Until one day Twilight Sparkle decides she really wants to know why Derpy's breasts are growing, and possibly even to replicate the condition artificially.

She foresees no way that this plan could go wrong.

WARNING! CONTAINS ANTHROS, BREAST EXPANSION, LACTATION, EXTREME HYPER BREASTS, BREASTFEEDING, AND PROBABLY A BUNCH OF OTHER WEIRD STUFF

cover art by Shnider.

Commissioned by Nimnul.

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