1girl, alternate_breast_size, apple_(ygbhjdbiulsg), arm_support, beach, bikini, black_bikini, black_hair, blunt_bangs, blush, breasts, cleavage, collarbone, grin, groin, idolmaster, idolmaster_shiny_colors, large_breasts, looking_at_viewer, mayuzumi_fuyuko, navel, on_ground, outdoors, sitting, smile, solo, sweatdrop, swimsuit, untied_bikini