Character illustration cover dark futuristic elegant

Create a square romantic Japanese isekai light novel cover illustration, showing two characters standing closely together at the center: a tall silver-haired female knight and a modern male high school student. The female lead has hair, styled in an elaborate fantasy updo, wearing dark floral ornaments, with fair skin, dressed in an ornate dark fantasy knight outfit including black armor pieces, belts, a corset-style top, asymmetrical hem details, over-knee sock elements, gloves, chains, ribbons, and delicate magical accessories. The boy has messy black hair and wears a modern blue school-uniform-style jacket over a white shirt with a slightly open collar, with dark lace-up and belt details and a backpack-like silhouette on his back, standing shoulder to shoulder with her, with an expression that seems both protective and slightly shy. Their faces are blurred with a soft square mosaic in the upper center, while their bodies and clothing remain highly detailed. The background is set in a moonlit fantasy garden, filled with ice-blue vegetation, hanging paper lanterns, falling petals, glowing mist, with crystal palace architecture visible in the distance and a huge full moon behind them. Use a palette of cool blue, silver, black, and light purple, with glowing rim light, a soft magical atmosphere, intricate anime fantasy details, and dramatic painterly rendering; the composition suits a romantic light novel cover, contains no title text, and leaves a subtle blank area at the top for adding a title later. Aspect ratio 1:1, highly refined, elegant, cinematic, ethereal, with slight decorative details, no watermark.