[Futanari] Futa Potion (Page 1 - 36) (Patreon)

A young couple stumbles into a mysterious, old potion shop run by an unusually tall and eerie woman. She offers them a magical drink, claiming it will improve their lives in unimaginable ways. That night, after the girlfriend tries the potion, she begins to grow taller, stronger, more confident and the two experience the most intense, unforgettable night of their lives.

But as morning comes, the true effects of the potion reveal themselves: the girlfriend is transforming into a Futanari. What was promised as a gift may become a life-changing burden neither of them saw coming...