pentagon (railgun ky1206), original, highres, 2girls, black hair, black sailor collar, black serafuku, black shirt, black skirt, blush, book, bow, cardigan, futaba akane (pentagon), futaba kohane (pentagon), green bow, hair between eyes, hair ornament, hairclip, hallway, indoors, long hair, long sleeves, low twintails, multiple girls, open cardigan, open clothes, open mouth, pink cardigan, pleated skirt, popped collar, purple eyes, red eyes, sailor collar, school uniform, serafuku, shirt, siblings, sisters, skirt, sweatdrop, twintails, very long hair, white shirt