1girl, ass, back, balloon, black_hair, blue_buruma, blue_eyes, buruma, cloud, cloudy_sky, confetti, day, gym_uniform, hachimaki, headband, idolmaster, idolmaster_million_live!, idolmaster_million_live!_theater_days, long_hair, miratarosu, mogami_shizuka, open_mouth, sky, solo, squatting, stadium, sunlight, thighs