The wife of the obstetrician's older brother, Ryoko, and the wife of the internist's younger brother, Nanako. The two had a little secret: unsatisfied with their husbands' performances, they decided to secretly swap partners and each made up an excuse to receive a medical examination. Nanako claimed she needed a pregnancy test and quietly enjoyed the sensation as her brother-in-law examined her intimate area on the examination table. Ryoko was also moist between her legs during her examination by her brother-in-law. The wives who came for another examination... One day, after closing hours, Ryoko and Nanako walked past their brothers-in-law who were chatting in the office...
