Chastity Vacation: My Wife's Supernatural Bull Awakening

To save their marriage, Mia and Chris escaped to a forgotten island, seeking to reignite a passion that had long since faded. The plan was simple: test their boundaries, starting with a chastity cage for him and the key around her neck. It was supposed to be a secret game for two, a way to reclaim what they'd lost. But the island had other plans. When Mia unearths an ancient, blood-veined artifact, a primal curiosity takes root.
A whispered invocation, a single drop of blood, and suddenly, they are no longer alone. He is Brant-a demon of immense power, a creature of pure, unbridled lust summoned from the island's core. He is everything a husband should fear, and everything Chris has guaranteed he will watch his wife embrace. What begins as a test of trust spirals into the ultimate taboo. With her husband a willing voyeur, bound to his own pleasure and torment, Mia must feed the demon's monstrous urge.
Their sacred vows are rewritten in a crucible of supernatural desire, BDSM, and the most scandalous surrender. This journey into sensual darkness will either forge their bond into something eternal or shatter their souls completely. Some hungers, once unleashed, can never again be caged.