1girl, alternate_hairstyle, ass, back, bare_shoulders, beach, bikini, blue_innertube, blue_sky, blunt_bangs, blush, breasts, brown_hair, chixida, cloud, eyewear_on_head, floral_print, flower, frilled_bikini, frills, from_behind, full_body, grin, hibiscus, hiragana, holding, holding_innertube, idolmaster, idolmaster_cinderella_girls, idolmaster_cinderella_girls_starlight_stage, innertube, kamiya_nao, kneepits, long_hair, looking_at_viewer, looking_back, medium_breasts, mountain, ocean, outdoors, red_eyes, sandals, side-tie_bikini_bottom, sky, smile, solo, summer, sunglasses, swimsuit, thick_eyebrows, tree, white_bikini