[VENX-290] Mother and son's sweaty, passionate sex begins with the sound of urination Izumi Yamagishi (Censored)

Mother and son bump into each other in front of the toilet. "Mom, please go first." He gives his mother her turn and waits in front of the door, trying to hold in his urge to pee... when he hears the faint sound of urination. "Jowaaaa... Trickle..." The son feels awkward hearing the sound of his mother relieving herself for the first time, but gradually he can't take his ears off. He wants to hear this sound more, wants to open the door right now and see the release. An unknown desire he has never felt before takes over the son...