4k, HD, 8k, mantialiasing, Highly detailed, High Quality, masterpiece, beautiful, 1girl, solo, (young woman, 16 years old), sekai saionji, black hair, brown eyes, ahoge, medium breasts, school uniform, ((shirt, shirt sleeves)), long sleeves, white sleeves, arms at sides, (black vest, vest), pleated skirt, black skirt, waist-length skirt, thighhighs, black thighhighs, zettai ryouiki, (back view), open_mouth, from_back, looking_back,
