This title features a video submitted to the editorial department of an SM magazine. The protagonist is Kikue, a company president's wife who has never been involved with any man other than her husband. However, due to a trap set by her younger sister, Mitzuko, she is captured by her SM-obsessed brother-in-law, Ryo, leading to intense scenes of vaginal stretching and powerful orgasms. This main feature contains explicit scenes filmed on location and serves as the first part of a series. The allure lies in the mature sister duo, dressed in traditional kimono, indulging shamelessly yet sweetly in a world of lesbian fisting.