To save his kingdom, a prince must become a bride.

Prince Dorian has surrendered himself to the Onyx Keep to spare his people from the Crimson Hegemony's wrath. He is offered as a diplomatic bride to Duchess Lilith, a terrifyingly beautiful, towering inherent futanari noblewoman. But there is a catch: a fragile human male body cannot possibly survive the brutal, demanding rut of a Hegemony elite.

To fulfill his duty and claim his place in her bed, Dorian must drink from the Chalice of Elevation.

What follows is an agonizingly pleasurable, visceral transformation. The ancient alchemical magic aggressively rewrites Dorian's flesh, melting away his masculinity to bless him with the heavy, hyper-sensitive, dual-anatomy of a futa. Stripped of his male identity, Dorian finds himself completely at the mercy of the Duchess, who takes immense pleasure in training her newly transformed, dripping bride. But as the magic settles into his blood, Dorian realizes he is no longer just a submissive human sacrifice. He is becoming her equal—a creature of raw, insatiable power, ready to claim the Duchess right back.