A few days after seeing off his wife, who had returned to her parents' home for childbirth. Yasutaka started feeling lonely without anyone to talk to in his solitary life. His sister-in-law, Yukari, came to check on him out of concern. He couldn't take his eyes off her massive breasts that seemed ready to burst out of her clothes and her voluptuous body. Of course, he couldn't get an erection for his sister-in-law, so he hurriedly escaped into the bathroom. But Yukari forcibly barged in... Yasutaka falls into a trap of adulterous sex with his voluptuous sister-in-law!
