Mature woman in her thirties, living in an apartment complex, ZOOO-194

On a busy morning balcony, a married woman hangs laundry and a middle-aged man stands beside her. They exchange suspicious words, but are interrupted when the husband calls out to them. After the wife sees her husband off, the man next door also hurriedly leaves with his trash. They pretend to bump into each other and exchange greetings. In the elevator... the middle-aged man secretly slips a letter to the woman. As she leaves, the woman sees her husband off. After he departs, he sees the letter that was handed to him, which reads, "It's not over yet. I still want to watch porn." (From Episode 1)