An otherworldly fantasy world. A night sky so mysterious and breathtakingly beautiful that it feels unreal. Based on deep cobalt blue, roseberry, vibrant cyan, and muted purple blend together in a fantastical way, forming a magnificent gradient as if the universe itself were painted with pigments. Countless stars stretch across the entire night sky like the flow of a river, resembling the Milky Way, and stardust of various sizes and shapes are scattered like falling across the entire sky. Fine diamond-dust-like sparkles, hexagrams, small cross-shaped stars, round faintly-glowing stars, flowing particles of light, and crystalline glimmers intermingle to create a fantastical depth. Faint auroral lights and nebulae drift gracefully through the sky, and soft veils of light envelop the entire night sky. The air itself is filled with magical particles, a mysterious and grand sky where dreams and myths intersect—something never seen in reality. Ultra-high-definition, overwhelming transparency, fantasy beauty, mysterious, luminous, cinematic lighting, volumetric lighting, ethereal atmosphere, cosmic fantasy, celestial beauty, dreamlike, magical, masterpiece. A girl is in a composition looking back toward the left side. With pastel-pink long hair and dark blue eyes, the girl is also mysterious, smiling enigmatically. A semi-3D, semi-2D illustration.