rasukaru, original, 1girl, artist name, black socks, blue skirt, brown eyes, brown hair, butterfly sitting, feet, feet together, female focus, full body, katana, kneehighs, knees apart feet together, long hair, looking at viewer, midriff, no shoes, panties, pantyshot, parted bangs, pleated skirt, school uniform, serafuku, simple background, sitting, skirt, socks, solo, sword, underwear, upskirt, weapon, white background, white panties