Back view, from below, Best-quality, Masterpiece, Ultra-High

back view, from below, Best-quality, Masterpiece, Ultra-High-Resolution, (Photorealistic:1.4), Raw Photo, depth of field, professional lighting, perfect anatomy, extremely details, 1girl, 15-years-old, the most famous Japanese idol, ((running up stairs)), upturned ass that wearing swimsuit, ((wearing Japanese high-school uniform with summer-design)), ((extremely cute face, (((extremely cute and extremely big eyes))), extremely beautiful short-cut-haired, extremely beautiful skins)), realistic skin texture, childish body, extremely beautiful thighs, looking back, innocent-smile

illustration, 3d, sepia, painting, cartoons, sketch, (worst quality:2), ((monochrome)), ((grayscale:1.2)), (backlight:1.2), analog, analogphoto, bad anatomy, bad hands, double navel, collapsed eyeshadow, multiple eyebrows, freckles, signature, logo, 2faces