1girl, bikini, breasts, drying, feet, greyscale, hair_between_eyes, hammock, idolmaster, idolmaster_cinderella_girls, long_hair, monochrome, mukago_(mukagomumumu), sandals, side-tie_bikini_bottom, sidelocks, simple_background, small_breasts, solo, swimsuit, towel, towel_around_neck, white_background, yuuki_haru