idolmaster, hoshii miki, maru (sara duke), 5:4 aspect ratio, cropped, 1girl, ahoge, bikini, bikini pull, blonde, blue sky, blush, breasts, cleavage, curvaceous, ;d, denim, denim shorts, female, female only, green eyes, happy, heart, heart-shaped pupils, long hair, looking at viewer, maru (cyclo-), marudayo, medium breasts, navel, one eye closed, open fly, open mouth, ponytail, pulled by self, scrunchie, shiny, shiny skin, shorts, short shorts, side-tie bikini, sky, smile, solo, string bikini, striped, striped bikini, striped swimsuit, sun, sunlight, swimsuit, symbol-shaped pupils, tied hair, unbuttoned, underboob, undressing, untied, untied bikini, unzipped, viewed from below, wet, wide hips, wink