3girls, armpits, black hair, blue eyes, breasts, buruma, cleavage, collarbone, gym uniform, kaku yone, large breasts, long hair, looking at viewer, multiple girls, name tag, navel, original, outdoors, running track, solo focus, sports bikini, sports bra, sportswear, standing, stomach, sweat, sweatdrop, track and field, track uniform, tying hair