4girls, bikini, black_bikini, blue_eyes, blue_swimsuit, blush, breasts, brown_bikini, choker, day, looking_at_viewer, medium_breasts, multicolored, multicolored_bikini, multicolored_clothes, multiple_girls, name_tag, o-ring, o-ring_bikini, ocean, open_mouth, partially_submerged, purple_hair, red_hair, school_swimsuit, side-tie_bikini, small_breasts, smile, strap_slip, swimming, swimsuit, undressing, wading, white_bikini, yellow_eyes