2girls, black bow, blush, bow, bow hairband, hair bow, hairband, long hair, long sleeves, looking at viewer, multiple girls, open mouth, pleated skirt, purple eyes, purple hair, red sailor collar, red skirt, ryouou school uniform, sailor collar, school uniform, serafuku, short hair, siblings, simple background, sisters, skirt, smile, sweatdrop, twins, twintails, white background, white serafuku, winter uniform, yellow bow