Synopsis
Takedo Nogawa is the pampered son of a wealthy industrialist. During his childhood, he was infatuated with Yumi Okamoto, his father's personal secretary. However, because she also served as his father's private sexual plaything, Yumi was forbidden territory for Takedo. After Takedo causes a traffic accident involving Yukie Kitazawa, an ordinary housewife, he seizes a chance to get one over on his father. Under a contract drafted by Yumi, Takedo lets Yukie avoid legal costs on the condition that she becomes his sex slave. Not willing to be outdone, the elder Nogawa dispatches his secretary to target Yukie's teenage daughters, using the contract as leverage to exploit them for his own twisted pleasures. A vicious rivalry unfolds as father and son compete to strip the Kitazawa women of their dignity. Ai Shimai: Futari no Kajitsu is a story about power and those who misuse it.