1girl, bikini, bikini_under_clothes, black_hair, blue_eyes, blue_shorts, blue_sky, breasts, cloud, collarbone, cutoffs, day, denim, denim_shorts, front-tie_bikini_top, front-tie_top, idolmaster, idolmaster_million_live!, long_hair, looking_at_viewer, medium_breasts, mogami_shizuka, navel, no_shirt, ocean, open_clothes, open_fly, open_shorts, outdoors, short_shorts, shorts, shuucream_(syuichi), sky, solo, standing, stomach, swimsuit, water, white_bikini