1girl, o, arms_up, ass_visible_through_thighs, black_hair, blue_sky, breasts, brown_eyes, cleavage, clothing_cutout, cloud, day, earrings, food_print, holding, holding_innertube, idolmaster, idolmaster_shiny_colors, innertube, jewelry, joey_koguma, long_hair, looking_at_viewer, mayuzumi_fuyuko, medium_breasts, one-piece_swimsuit, outdoors, pink_one-piece_swimsuit, print_innertube, sky, solo, sun, sunlight, swimsuit, thighs, watermelon_print