1girl, black_bodysuit, black_neckerchief, bodysuit, breasts, brown_hair, dated, grey_eyes, hachimaki, hair_horns, hatsuzuki_(kancolle), headband, kantai_collection, looking_at_viewer, maru_(marg0613), neckerchief, one-hour_drawing_challenge, school_uniform, serafuku, shirt, short_sleeves, small_breasts, solo, twitter_username, white_shirt