Anime schoolgirl posing playfully beside a swimming pool

hadou nejire, 1girl, ahoge, blue eyes, blue hair, blue sailor collar, blue skirt, drill hair, ghost pose, hitodama, neckerchief, official alternate costume, official alternate hairstyle, open mouth, pleated skirt, red neckerchief, sailor collar, school uniform, serafuku, simple background, skirt, solo, twin drills, beside the swimming pool