Shark Train: The Abyss Beneath the Sea-Gate Express

A luxury train crosses a cursed sea. Beneath it, something with black fins and ancient teeth has started biting the bridge apart. Sena Cross is only a lower-deck mechanic on the Sea-Gate Express Seraphim, the shining rail line that carries nobles, priests, merchants, and ordinary passengers over the abyssal Lathar Sea. Her job is simple: keep the miracle running, stay out of sight, and never challenge the people above her.
Then a maintenance worker vanishes at Seventh Pylon. The official story is weather damage. Sena knows better. She saw the bite marks. She heard the final transmission. And when the Seraphim departs anyway, the sea below begins to move. As tremors strike the train, safety systems fail, class divisions turn deadly, and sealed records point back to her father's ruined name, Sena is forced into a fight no one prepared her for.
The passengers want reassurance. The captain wants silence. The priests call it divine anger. But whatever hunts beneath the rails is not waiting for permission. With the abyss rising below, the bridge weakening ahead, and a monstrous shark circling in the dark, Sena must decide how far she will go to save a train built to sacrifice people like her first. For readers who love fantasy disaster thrillers, sea monster horror, magic-powered trains, class tension, survival action, and heroines who fight with grit instead of prophecy, Shark Train delivers a high-stakes ride across a sea that should never have been crossed.
The Seraphim was built to conquer the ocean. The ocean remembers.