1girl, alternate_costume, black_sweater, breasts, brown_eyes, brown_hair, kantai_collection, large_breasts, long_hair, matsunaga_(haku), ooi_(kancolle), open_clothes, open_shirt, sailor_collar, sailor_shirt, shirt, simple_background, sleeveless, sleeveless_sweater, solo, sweater, turtleneck, twitter_username, upper_body, white_background, white_shirt