2girls, amatsukaze_(kancolle), ass, ball, beach, beachball, bikini, blonde_hair, blush, bracelet, breasts, brown_eyes, collarbone, day, from_behind, front-tie_bikini_top, front-tie_top, grey_hair, hair_tubes, hairband, innertube, jewelry, kantai_collection, long_hair, looking_at_viewer, looking_back, lying, multiple_girls, navel, necklace, ocean, on_stomach, open_mouth, outdoors, scrunchie, shimakaze_(kancolle), side-tie_bikini_bottom, simple_background, small_breasts, sweat, sweatdrop, swimsuit, takanashi_kei_(hitsujikan), thighs, water, wrist_scrunchie