Forbidden magic comes with a heavy, throbbing price.

Gwendolyn is a strict, brilliant human scholar in the Grand Athenaeum, obsessed with studying the biological superiority of the Crimson Hegemony's futanari overlords. But when a highly concentrated drop of stolen magical nectar splashes onto her skin, her detached academic life is violently overwritten.

The ancient magic aggressively rewrites her body, melting away her modest human form and blessing her with the heavy, hyper-sensitive, and massive anatomy of a futa. Desperate to avoid execution, Gwendolyn tightly binds her new endowment beneath her academic robes. But the magic triggers a potent heat cycle, and her heavy, intoxicating pheromones soon overwhelm her devoted female assistant, Matilda.

When Matilda discovers the massive secret hiding beneath her mentor's robes, she doesn't run. Instead, she falls to her knees. What begins as a desperate, feral release in a locked office quickly spirals into a secret double life. Gwendolyn discovers the dark thrill of her new predatory instincts, using her massive futa anatomy to systematically corrupt her assistant—and her academic rivals—into a devoted, dripping harem hidden in plain sight.