1girl, alternate_costume, ass, bare_shoulders, black_bra, black_panties, bra, breasts, brown_eyes, brown_hair, cleavage, cowboy_shot, from_behind, ishida_arata, kantai_collection, looking_at_viewer, looking_back, medium_breasts, panties, shiratsuyu_(kancolle), sideboob, simple_background, solo, twitter_username, underwear, v, white_background