1girl, arms_behind_back, black_neckerchief, black_one-piece_swimsuit, blue_eyes, blue_sailor_collar, blue_sky, cloud, covered_navel, crop_top, day, flower, hair_flower, hair_ornament, horizon, kantai_collection, looking_at_viewer, neckerchief, ocean, one-piece_swimsuit, one-piece_tan, outdoors, rakuto89, ro-500_(kancolle), sailor_collar, school_swimsuit, shirt, signature, sky, sleeveless, sleeveless_shirt, solo, swimsuit, swimsuit_under_clothes, tan, tanlines, wading, water, white_hair