1girl, aoba_misaki, bad_anatomy, ball, beach, beachball, bikini, black_bikini, blue_sky, breasts, brown_eyes, brown_hair, cloud, day, ebifu, idolmaster, idolmaster_million_live!, idolmaster_million_live!_theater_days, leaning_forward, medium_breasts, navel, outdoors, sky, solo, standing, starfish, swimsuit, two_side_up, wet