tape gag, gagged, gag, multiple girls, monochrome, breasts, nipples, bondage, 2girls, bound, bdsm, greyscale, dark skin, shibari, rope, dark-skinned female, nude, long hair, short hair, crotch rope, improvised gag, arms behind back, large breasts, blush, bound legs, navel, heart, tears, kneeling, medium breasts, seiza, looking at viewer, breast bondage, sitting, white background, restrained, flying sweatdrops, frogtie, simple background, pillow, bound arms, bound together, pussy, open mouth