Key Visual Anime Prajurit Dewa Laut Poseidon

A dramatic vertical fantasy anime illustration of [Poseidon, god of the sea] reimagined as a young, handsome warrior standing amidst a storm of glowing ocean water. He has windswept wavy [vivid turquoise-blue] hair, sharp blue eyes, a calm serious expression, and a delicate gold horn-like diadem. He wears luminous crystalline aqua armor adorned with intricate gold filigree, layered pauldrons, bracers, and a flowing translucent sea-foam cape. In his foreground hand, he holds a tall polished golden trident with three flame-shaped prongs radiating divine light. In the upper background, a massive serpentine water dragon formed from translucent waves coils with icy fins and crystalline scales. Dynamic low-angle three-quarter composition, trident framed along the left, subject centered slightly to the right within a swirling aquatic vortex. Deep navy night sea backdrop, cyan bioluminescence, white sea spray, sharp gold rim lighting, polished gacha-game key visual style, crisp linework, vibrant magical effects. No text, watermark, or logo.