1girl, bare shoulders, black nails, black shirt, black shorts, blue hair, blush, breasts, closed mouth, demon horns, grey hair, groin, hair rings, halloween, horns, idolmaster, idolmaster shiny colors, kuroba aki, long hair, looking at viewer, medium breasts, multicolored hair, nail polish, navel, purple eyes, shirt, short shorts, shorts, simple background, sleeveless, sleeveless shirt, smile, solo, two-tone hair, white background, yukoku kiriko