tq amatouchan, himesaki rinami, gakuen idolmaster, idolmaster, commentary request, highres, 1girl, arms behind back, ass, ass focus, bare arms, bare legs, bare shoulders, beach, bikini, blue eyes, blue sky, breasts, brown hair, cloud, cloudy sky, facing away, floral print, frilled bikini, frills, hair between eyes, hair bun, holding, holding swim ring, innertube, large breasts, long hair, looking at viewer, looking back, ocean, pink bikini, sky, smile, solo, swim ring, swimsuit