1girl, ass, blue_buruma, blue_eyes, blue_sky, brown_hair, buruma, cloud, day, grass, gym_shirt, gym_uniform, hand_on_own_hip, holding, long_hair, looking_at_viewer, looking_back, nonaka_ritsu, original, outdoors, parted_lips, profile, shirt, short_sleeves, sky, solo, stopwatch, sweat, white_shirt