1girl, ass, black_hair, blue_sky, building, buruma, cloud, day, from_behind, kuri_(kurigohan), looking_at_viewer, looking_back, multicolored_buruma, open_mouth, original, outdoors, red_eyes, red_sports_bra, running, short_hair, sky, smile, solo, sports_bikini, sports_bra, teeth, upper_teeth_only