1girl, black_headwear, black_neckerchief, black_one-piece_swimsuit, blue_sailor_collar, clothes_writing, cosplay, covered_navel, cowboy_shot, crop_top, garrison_cap, hat, headgear, kantai_collection, long_hair, looking_at_viewer, neckerchief, one-hour_drawing_challenge, one-piece_swimsuit, ro-500_(kancolle), ro-500_(kancolle)_(cosplay), sailor_collar, school_swimsuit, shirt, shy, simple_background, sleeveless, sleeveless_shirt, solo, swimsuit, swimsuit_under_clothes, tf_cafe, twitter_username, u-511_(kancolle), white_background