shio, hiiragi kagami, hiiragi tsukasa, lucky star, black legwear, 00s, 2girls, :d, blue eyes, blush, expressionless, hair ribbon, hairband, long hair, looking at viewer, miniskirt, multiple girls, open mouth, pleated skirt, purple hair, red background, red skirt, ribbon, school uniform, serafuku, short hair, siblings, simple background, sisters, skirt, smile, tareme, thighhighs, twins, twintails, very long hair, zettai ryouiki