2girls, bikini, black_bikini, black_hair, blonde_hair, blush, breasts, cathy_idx, cleavage, closed_mouth, collarbone, front-tie_bikini_top, front-tie_top, hair_between_eyes, hair_ribbon, inoue_takina, long_hair, lycoris_recoil, medium_breasts, multiple_girls, navel, nishikigi_chisato, ocean, open_mouth, partially_submerged, purple_eyes, red_eyes, red_ribbon, ribbon, selfie, short_hair, swimsuit, taking_picture, thighs, water, wet, white_bikini