riyo (riyontoko), mizutani eri, idolmaster, idolmaster dearly stars, 00s, 1girl, bare shoulders, black hair, blue hair, boots, cute & girly (idolmaster), detached sleeves, dress, female focus, finger to mouth, full body, hair ornament, long sleeves, looking at viewer, pink dress, pink theme, short hair, simple background, skirt, solo, swept bangs, thighhighs, white background, wrist cuffs, zettai ryouiki