1girl, barefoot, bikini, blue_sky, brown_hair, character_name, cloud, day, flat_chest, full_body, green_eyes, heart_arms, horizon, idolmaster, idolmaster_cinderella_girls, innertube, light_rays, long_hair, looking_at_viewer, mushoku_santarou, ocean, one-piece_tan, outdoors, ponytail, shiina_noriko, side-tie_bikini_bottom, sky, smile, solo, striped, striped_bikini, sunbeam, sunlight, swimsuit, tan, tanlines