Legacy of the Colossus Series by Vexi Thorne

"You bring sticks to a breaking? You bring iron to a King? ". The boundary was simple: white quartz and silence. I was the Track-Breaker, the one who kept the village safe from the Whispering Ridge. I was never supposed to cross. But my brother did. I went into the mist to save him. I didn't expect the forest to be waiting for me. I didn't expect the fog to taste like ozone and musk, or the shadows to have eyes of molten gold. He is the Firstborn... more"You bring sticks to a breaking? You bring iron to a King? ". The boundary was simple: white quartz and silence. I was the Track-Breaker, the one who kept the village safe from the Whispering Ridge. I was never supposed to cross. But my brother did. I went into the mist to save him. I didn't expect the forest to be waiting for me. I didn't expect the fog to taste like ozone and musk, or the shadows to have eyes of molten gold. He is the Firstborn. A creature of obsidian and fire, sharper and crueler than the legends. He didn't just catch me; he claimed me. He marked me with a bite that turned my veins to gold and locked me in his volcanic keep. Now, my belly is swelling with a hunger that isn't mine. My brother is no longer a prisoner, but a pet. And the King doesn't want a sacrifice. He wants a legacy. I am no longer Elara. I am the Mother of the fire. And I am Claimed. CLAIMED is a dark, high-heat monster romance novella featuring rapid pregnancy, size difference, knotting, and breeding. It is the second book in the Legacy of the Colossus series but can be read as a standalone. less

"The water isn't sick. It's hungry. ". I am a woman of science. I believe in cause and effect, in pathology, in things I can measure. I went to the river to find the poison killing my village. I didn't expect the river to grab me back. I fell into the Blackwater and was dragged into the dark—down to the deep aquifer where the sun never reaches. I should have drowned. instead, I was caught. He is the River King. A creature of bioluminescence and slick, gray muscle... more"The water isn't sick. It's hungry. ". I am a woman of science. I believe in cause and effect, in pathology, in things I can measure. I went to the river to find the poison killing my village. I didn't expect the river to grab me back. I fell into the Blackwater and was dragged into the dark—down to the deep aquifer where the sun never reaches. I should have drowned. instead, I was caught. He is the River King. A creature of bioluminescence and slick, gray muscle. He didn't just save me; he claimed me. He says I am leaking heat. He says I am fragile. He wraps his cold, coiled body around mine to keep me warm, feeding me silver roe that changes my biology and binds me to the deep. Now, my belly is swelling with a translucent, glowing pearl. The village is poisoning the water above, but down here, I am not a victim. I am the filter. And I am never surfacing again. I am Caught. CAUGHT is a dark, high-heat monster romance novella featuring aquatic themes, size difference, forced proximity/body heat sharing, and a unique "egg/pearl" pregnancy. It is the third book in the Legacy of the Colossus series. less

The surface is a frozen graveyard. The deep is a molten trap. And he is the god of the mountain. For three years, I’ve survived the permafrost by scavenging scraps of heat and breathing through a rusted scrubber. But when I break into a forbidden cavern to steal a thermal core, I don’t find a stone. I wake a King. Thane is a nightmare of midnight-black armor and liquid fire... moreThe surface is a frozen graveyard. The deep is a molten trap. And he is the god of the mountain. For three years, I’ve survived the permafrost by scavenging scraps of heat and breathing through a rusted scrubber. But when I break into a forbidden cavern to steal a thermal core, I don’t find a stone. I wake a King. Thane is a nightmare of midnight-black armor and liquid fire. He doesn't just want the thief who trespassed on his altar—he wants the female who smells like the first thaw in a millennium. Now, I’m trapped miles beneath the ice in his geothermal nest. He’s stripped away my survival gear, flooded my lungs with his own burning breath, and marked my womb with a permanent, glowing heat. My body is no longer human. It’s mutating to accommodate his size, his density, and his catastrophic thermal radiation. I came to the deep to save my village. But I’m staying because the monster who unmade me has made me the Mother of his volcano. And I have never been warmer. Reader Heart of Obsidian is a high-heat, standalone monster romance within the Legacy of the Colossus series. It features extreme size difference, biological body transformation, and explicit breeding/oviposition themes. less