1girl, ass, back, black_one-piece_swimsuit, blue_background, blue_sailor_collar, blue_skirt, blush, brown_eyes, brown_hair, crab, dated, kantai_collection, looking_back, oboro_(kancolle), one-piece_swimsuit, open_mouth, sailor_collar, school_swimsuit, school_uniform, serafuku, shirt, short_hair, short_sleeves, skirt, solo, swimsuit, swimsuit_under_clothes, twitter_username, umibudou, white_shirt