1girl, artist_name, black_one-piece_swimsuit, blunt_bangs, breasts, brown_hair, collarbone, competition_school_swimsuit, cowboy_shot, green_eyes, headgear, helena_(kancolle), highleg, kantai_collection, long_hair, looking_at_viewer, medium_breasts, one-piece_swimsuit, school_swimsuit, simple_background, sitting, smile, solo, swimsuit, taira_yuuki, white_background