koya (koya x 00), sagisawa fumika, idolmaster, idolmaster cinderella girls, commentary request, highres, 1girl, arm under breasts, bikini, black hair, blue eyes, blurry, blurry background, bracelet, breasts, choker, collarbone, earrings, fingernails, hairband, halterneck, jewelry, large breasts, leaning forward, long hair, looking at viewer, nail polish, pool, poolside, scrunchie, side-tie bikini bottom, signature, solo, swimsuit, tucking hair, white bikini, white choker, white hairband, wrist scrunchie