2boys, 2girls, aged_up, barbell, bike_shorts, black_hair, bouncing_breasts, breasts, carrying, child, english_text, exercise, family, father_and_daughter, father_and_son, flying_sweatdrops, grey_hair, heavy, if_they_mated, large_breasts, man_(meme), meme, mother_and_daughter, mother_and_son, multiple_boys, multiple_girls, muscular, muscular_male, piggyback, ponytail, sakurai_shin'ichi, shirt, simple_background, spiked_hair, struggling, sugoi_dekai, sweat, t-shirt, tina_fate, topless_male, towel, towel_around_neck, treadmill, uzaki-chan_wa_asobitai!, uzaki_hana, weightlifting, white_background