nanatsu no umi, original, absurdres, commentary request, commission, highres, pixiv commission, 2girls, black hair, black jacket, black thighhighs, blazer, blue skirt, blush, bra, glasses, hand under clothes, jacket, long hair, looking at another, lying, multiple girls, necktie, on back, on bed, open clothes, open mouth, open shirt, pleated skirt, ponytail, red hair, red necktie, saliva, school uniform, shirt, short hair, skirt, sweat, thighhighs, tongue, tongue out, underwear, white bra, white shirt, yellow eyes, yuri