A 30-year-old married woman with a youthful face enters her third year of marriage. She boldly performs oral sex on another man's penis right in front of her husband, revealing expressions and appearances she's never shown her spouse before. The second couple is the young Kato pair, a loving husband and wife with a clear sadomasochistic dynamic. At the wife's request, they take on the new challenge of engaging with multiple outside men, going bareback...