A striking Japanese woman in a modern school uniform, holding a gleaming katana, stands poised in a shadowy alleyway. The scene is rendered in high-definition 3D, capturing an intense and cinematic atmosphere. The lighting casts dramatic shadows, highlighting her determined expression and the intricate details of her attire and weapon. The backdrop hints at a bustling urban environment just beyond the alley's darkness. The style is expressive, with vivid colors and a touch of mystical allure, akin to an immersive gaming experience in Unreal Engine, rendered at an ultra-high resolution.