seki suzume, akizuki ritsuko, hoshii miki, miura azusa, idolmaster, idolmaster (classic), idolmaster 1, highres, 00s, 3girls, ahoge, ass, bikini, blonde hair, blue hair, blush, breasts, brown hair, cleavage, competition swimsuit, covered erect nipples, green eyes, large breasts, long hair, multiple girls, one-piece swimsuit, outstretched arms, red eyes, school swimsuit, smile, spread arms, swimsuit, worried