1girl, ano_hito, armpits, arms_behind_head, bad_pixiv_id, bikini, black_hair, blue_sky, breasts, brown_eyes, cloud, cowboy_shot, day, halterneck, long_hair, medium_breasts, navel, ocean, original, outdoors, palm_tree, side-tie_bikini_bottom, sky, solo, string_bikini, swimsuit, tan, tree, white_bikini