hara yumiko, sawachika eri, suou mikoto (school rumble), tsukamoto tenma, tsukamoto yakumo, school rumble, highres, 00s, 4girls, armpits, bikini, blonde hair, bra, breasts, cleavage, front-tie top, innertube, large breasts, multiple girls, navel, one eye closed, polka dot, polka dot bikini, red eyes, short hair, side-tie bikini bottom, small breasts, striped bikini, striped bra, striped clothes, swim ring, swimsuit, underwear, wink