1girl, black_one-piece_swimsuit, breasts, collarbone, covering_breasts, covering_privates, cowboy_shot, crescent, crescent_hair_ornament, embarrassed, green_eyes, green_hair, hair_between_eyes, hair_ornament, kantai_collection, long_hair, looking_at_viewer, nagatsuki_(kancolle), one-piece_swimsuit, open_mouth, pink_background, school_swimsuit, small_breasts, solo, swimsuit, white_background, yuuji_(itadon)