moonsorrow, original, commentary request, commission, highres, large variant set, pixiv commission, variant set, 1girl, arms up, black socks, blue sailor collar, blue skirt, brown hair, closed mouth, expressionless, full body, grey eyes, hands on own head, kneeling, long hair, looking at viewer, midriff peek, navel, neckerchief, pleated skirt, red neckerchief, sailor collar, school uniform, serafuku, shirt, short sleeves, simple background, skirt, socks, solo, straight-on, straight hair, white background, white shirt