A dark fantasy portrait of a female warrior in a seductive and menacing pose. She is holding a katana-style sword vertically in front of her face, the blade partially obscuring her features. One hand grips the hilt with long, sharp black manicured nails, while the other hand rests delicately near the blade, also with black nails. She is adorned with ornate, gothic-style jewelry: multiple rings with large dark red gemstones, a delicate chain draped across her forehead, and a thin gold chain around her neck. She wears intricate, dark metallic armor with gold accents and a low-cut bodice. Large, curved, metallic demon horns protrude from her head. The background is dark and moody with a blurred, out-of-focus object in the foreground. Cinematic lighting, dramatic shadows, high contrast, sharp focus on the sword and hands, photorealistic, cosplay aesthetic, mysterious and powerful aura.