[JUR-781] My father-in-law, who had just returned from a tuna fishing boat after three months, caught me in a single fishing hook.

Encouraged by her husband Makoto, Aoi visits her father-in-law's house alone. Then, after three months of tuna fishing, his father-in-law Ryozo returns home in a state of abstinence. Misunderstood as a housekeeper, Aoi cannot resist Ryozo's fierce desire and is forcibly embraced by him. Aoi is swept away by a wild strength her husband lacks and by her father-in-law's dedication to serving freshly caught fish. Taking advantage of Makoto's absence, she sinks into a sea of immorality and, three months later, without hesitation, heads toward her father-in-law, who is once again driven by lust.