yoshito, hoshii miki, idolmaster, idolmaster (classic), idolmaster million live!, commentary, english commentary, highres, 1girl, arm behind back, bikini, blonde hair, breasts, cleavage, collarbone, dated, gluteal fold, green eyes, halterneck, happy birthday, large breasts, looking at viewer, navel, ponytail, short ponytail, side-tie bikini bottom, solo, stomach, string bikini, swimsuit, thigh gap, white bikini, wide ponytail