over the mouth gag, swimsuit, multiple girls, 2girls, bdsm, bondage, gag, bound, orange hair, one-piece swimsuit, rope, shibari, bikini, arms behind back, improvised gag, shibari over clothes, barefoot, pink hair, frogtie, short hair, long hair, blush, breasts, green eyes, braid, ahoge, looking at viewer, multicolored hair, sitting, gagged