ERDM-052 Amateur prank project, a strange male customer appears in a chartered bathhouse, a young wife is hit on and taken away for an affair sex 4 hours

Pulling an erotic prank on amateur housewives! While relaxing in a private bath, an unknown naked man enters? Unable to escape in their unguarded naked state, they are confused. The man doesn't seem to care and starts talking, causing the housewives to panic slightly. In the bath alone with him, they can't help but notice his young, virile member! Will they end up having intense sex through erotic negotiation? The lewd prank of confusion and excitement with 16 women!