Mother and child bathing incest

It's been three months since her husband disappeared with debts left behind... Mari and her only son Masaru, who have lost their home, are looking for a place to live. Meanwhile, a salesman suddenly stops and asks him to be running a "trial occupancy campaign" in a condominium for sale, and for some reason the two end up living there... The two forget about the unpleasant things and soak in a spacious bathtub. However, it didn't take long for me to turn back to reality. The next day, the salesman visits Mari again...