4girls, arimura_yuu, beach, bikini, black_hair, black_ribbon, blue_sky, brown_hair, closed_eyes, cloud, colored_tips, cowboy_shot, day, dutch_angle, feet_out_of_frame, frilled_bikini, frills, green_bikini, green_eyes, hachijou_(kancolle), hair_between_eyes, hair_ribbon, horizon, innertube, ishigaki_(kancolle), kantai_collection, kunashiri_(kancolle), multicolored_hair, multiple_girls, ocean, orange_eyes, outdoors, pink_hair, purple_eyes, red_bikini, red_ribbon, ribbon, shimushu_(kancolle), short_hair, side-tie_bikini_bottom, sky, swimsuit, two-tone_hair, two_side_up, upper_body, white_bikini, white_hair, white_ribbon