3girls, beach, bikini, bikini_tug, blush, breasts, cleavage, collarbone, day, dutch_angle, floral_print, frilled_bikini, frills, glasses, grey-framed_eyewear, hayami_kanade, idolmaster, idolmaster_cinderella_girls, large_breasts, light_smile, looking_at_viewer, lying, mat, multiple_girls, navel, nimoni816, on_side, outdoors, playing, semi-rimless_eyewear, solo_focus, swimsuit, yagami_makino