punto, mizutani eri, idolmaster, idolmaster dearly stars, bad id, bad pixiv id, 00s, 1girl, animal ears, black thighhighs, blue eyes, blue hair, cat ears, cat girl, cat tail, female focus, full body, hair ornament, hairclip, kemonomimi mode, matching hair/eyes, necktie, nyan, one-piece swimsuit, open mouth, paw pose, school swimsuit, school uniform, short hair, solo, swimsuit, swimsuit under clothes, tail, thighhighs, white background