1girl, o, ahoge, alternate_costume, ass, back, black_one-piece_swimsuit, blush, brown_eyes, competition_school_swimsuit, dated, feet_out_of_frame, flat_chest, from_side, gradient_hair, hair_ribbon, hand_on_own_stomach, heterochromia, kantai_collection, kneepits, legs, light_brown_hair, long_hair, looking_at_viewer, looking_back, maru_(marg0613), multicolored_hair, murasame_(kancolle), murasame_kai_ni_(kancolle), one-hour_drawing_challenge, one-piece_swimsuit, parted_lips, red_eyes, ribbon, school_swimsuit, sidelocks, simple_background, solo, standing, swimsuit, twitter_username, two_side_up, very_long_hair, white_background