"All of a sudden, I got a message from my husband in baby talk saying, 'Oh, I want to see you soon♪' on my cell phone..."Eriko Nagasawa, 30, a full-time housewife. A busty G-cup wife, she lives with her husband, who she has been married for 8 years, and their 7-year-old son. Even after having a child, she and her husband have sex three times a week, but it turns out that they were just having sex to camouflage his affair. "At first, I found out he had been going to brothels while I was pregnant. But I turned a blind eye, thinking it was a common story. But then I found out again... and this time the woman he was with was a female college student..." Eriko, who entered her 30s last year, was more angry about the fact that the woman he was with was a young woman than about the affair itself, and decided to cheat on her own. "It's not enough to just cheat out of spite, so I thought I'd take the plunge and do it..." Her goal was to get back at her husband, but as the shoot progressed, she gradually became swept up in a whirlpool of pleasure...