1girl, ahoge, ass, azur_lane, black_ribbon, blue_buruma, blue_hair, blurry, blurry_background, buruma, from_behind, gym_uniform, hair_ribbon, helena_(azur_lane), kyl490, long_hair, open_mouth, outdoors, ponytail, purple_eyes, ribbon, running_track, shirt, soda_bottle, solo, white_shirt