1girl, bikini, black_bikini, breasts, brown_eyes, brown_hair, hair_flaps, hairband, jacket, kantai_collection, looking_at_viewer, medium_breasts, official_alternate_costume, open_mouth, pink_background, red_hairband, shirasumato, shiratsuyu_(kancolle), short_hair, shorts, smile, solo, swimsuit, swimsuit_under_clothes, twitter_username, white_background