2girls, ass, back, black_one-piece_swimsuit, blue_eyes, breasts, brown_hair, competition_swimsuit, cowboy_shot, day, dual_persona, high_side_ponytail, kantai_collection, large_breasts, long_hair, looking_at_viewer, looking_back, montemasa, multiple_girls, one-piece_swimsuit, open_mouth, ponytail, saratoga_(kancolle), saratoga_mk_ii_(kancolle), side_ponytail, smokestack_hair_ornament, swimsuit, white_one-piece_swimsuit, window