kotatsu-mazoku, original, commentary request, highres, 1girl, ahoge, black pantyhose, black sailor collar, black skirt, blue neckerchief, blush, brown shoes, collarbone, dot nose, frilled skirt, frills, full body, grey hair, hair between eyes, hair intakes, lab coat, lab coat girl (kotatsu-mazoku), long hair, long sleeves, looking at viewer, neckerchief, open mouth, pantyhose, pink eyes, pleated skirt, sailor collar, school uniform, serafuku, shirt, shoes, simple background, skirt, solo, sparkle, standing, white background, white shirt