1girl, aqua_bikini, ass, back, beach, bikini, blue_bikini, blue_sky, blush, breasts, brown_eyes, brown_hair, cloud, cloudy_sky, day, from_behind, halterneck, horizon, kyon_(kyouhei-takebayashi), looking_at_viewer, looking_back, medium_breasts, ocean, original, outdoors, sand, shore, sky, smile, solo, standing, string_bikini, swimsuit, water, waves