mayo riyo, kikuchi makoto, arena (company), idolmaster, idolmaster (classic), bad id, bad pixiv id, 00s, 1girl, baseball cap, bent over, black hair, blue eyes, character name, competition swimsuit, female focus, hat, jacket, legs, long legs, no socks, one-piece swimsuit, open clothes, open jacket, raglan sleeves, salute, shoes, short hair, sneakers, solo, swimsuit, swimsuit under clothes, thighs, tomboy