1girl, alternate costume, arm behind head, arm up, blue sailor collar, blue skirt, blue sky, blurry, blurry background, breasts, brown eyes, brown hair, building, closed mouth, cloud, cloudy sky, dated, day, depth of field, looking at viewer, medium breasts, navel, neckerchief, outdoors, pleated skirt, red neckerchief, sailor collar, school uniform, serafuku, shirt, short sleeves, signature, skirt, sky, smile, solo, white shirt, window