1girl, antenna_hair, bikini, black_bikini, black_eyes, black_hair, blue_sky, breasts, cloud, day, halterneck, horizon, idolmaster, idolmaster_(classic), idolmaster_2, idolmaster_million_live!, kikuchi_makoto, looking_at_viewer, mogskg, ocean, outdoors, short_hair, side-tie_bikini_bottom, sky, small_breasts, solo, standing, swimsuit, water