A charming young woman with sleek white hair styled in a high ponytail, adorned with a futuristic horn headband. She is dressed in a dark denim jacket and carries a backpack from which a katana subtly peeks out. Her striking blue eyes glisten with curiosity in the neon-lit cyberpunk environment of a bustling subway. The scene is captured in hyperrealistic detail, 8k resolution, achieved through the power of Unreal Engine with a 3D render showcasing intricate textures and an expressive style. The composition is set in a 9:16 aspect ratio, blending vibrant colors and dynamic lighting to create an immersive and photorealistic experience.