1girl, alternate_costume, arms_at_sides, bikini, black_hair, blue_eyes, breasts, closed_mouth, cross-laced_bikini, cross-laced_clothes, cross-laced_one-piece_swimsuit, dated, feet_out_of_frame, grey_background, hair_between_eyes, kantai_collection, long_hair, maru_(marg0613), navel, no_eyewear, one-hour_drawing_challenge, ooyodo_(kancolle), simple_background, small_breasts, solo, swimsuit, twitter_username, very_long_hair, white_bikini