In the quiet province beneath Mount Kalumbayan, people fear the ancient forest for one reason-engkanto still live within it. Seraphina Villareal never believed the terrifying stories whispered by the elders. Not until one stormy night changed everything. After meeting a mysterious golden-eyed man beneath a cursed balete tree, Seraphina becomes trapped in a dangerous connection she cannot escape. Kael-the feared Shadow King of the engkantos-is powerful, immortal, and obsessed with her in ways no human could ever understand. The more Seraphina is pulled deeper into his dark supernatural world, the more she discovers terrifying secrets hidden beneath the mountain... secrets soaked in blood, ancient magic, and forbidden desire. But loving an engkanto comes with a deadly price. Because Kael is not a prince from fairytales. He is a monster born from darkness. And monsters do not love gently. Filled with fantasy, paranormal mystery, forbidden romance, obsession, and dark mythical creatures, Crimson Desire: Eternal Claim is a haunting love story between a human girl and the dangerous king who would destroy the world just to keep her forever.