kurokawa nagiko, girlfriend (kari), sangokushi puzzle taisen, official art, 1girl, bag, bags under eyes, black hair, black nails, black thighhighs, blazer, blue jacket, blue necktie, crossover, frilled skirt, frills, guitar, instrument, jacket, long hair, looking at viewer, nail polish, necktie, open mouth, plaid clothes, plaid skirt, pleated skirt, red eyes, sailor collar, school uniform, short sleeves, sitting, skindentation, skirt, solo, thighhighs, wing collar, zettai ryouiki