1girl, alternate_costume, black_hair, black_one-piece_swimsuit, breasts, brown_eyes, collarbone, competition_swimsuit, cowboy_shot, hair_ornament, hairclip, kantai_collection, kudou_(ooabareteng), looking_at_viewer, medium_breasts, medium_hair, one-piece_swimsuit, open_mouth, oyashio_(kancolle), simple_background, smile, solo, swimsuit, white_background