1girl, athletic_leotard, black_hair, brown_eyes, cowboy_shot, flat_chest, from_below, gymnastics, kantai_collection, leotard, looking_to_the_side, maru_(marg0613), short_hair, short_hair_with_long_locks, sideways_glance, simple_background, solo, two-tone_leotard, ukuru_(kancolle), white_background