1girl, beach, bikini, black_hair, blue_bikini, blue_eyes, blue_sky, blush, breasts, cloud, cowboy_shot, day, frilled_bikini, frills, front-tie_bikini_top, front-tie_top, idolmaster, idolmaster_million_live!, idolmaster_million_live!_theater_days, lockheart, long_hair, mogami_shizuka, navel, ocean, outdoors, ponytail, sidelocks, sky, small_breasts, solo_focus, standing, swimsuit