A self-proclaimed "lover of married women's hearts," AV director Takahashi Hiroshi invites his wife's friend over to stay at their home under false pretenses. As they spend the night together alone, there's no denying that something fishy is going on... Kumiko, 35 years old and married for 11 years without children, runs her family's udon restaurant while her husband is away. When he unexpectedly returns early, she panics but calms down after sharing dinner with him. She confesses her insecurities about not being desirable as a woman, and the director encourages her. He teaches her ways to strengthen her relationship with her husband through intimate acts, which she gradually accepts. As their interactions become increasingly explicit, Kumiko experiences multiple orgasms in various positions, including one during doggy style where she cries out in ecstasy. In retaliation for her pleasure, she performs an impromptu blowjob while still half-asleep. Their morning sex session sees her writhing in delight, showcasing her newfound confidence and sexual appetite.

自称「人妻の心の恋人」AV監督・高橋浩一が自分の奥さんの女友達を下心満載で自宅に泊める。2人きりで一夜を過ごす人妻の身に何もないワケが無く…。久美子35歳、結婚11年目、子供無し、家業うどん屋手伝い。不在のはずの家主が戻り慌てた人妻も夕食を共にしリラックス状態で、女としての魅力が無いと悩みを告白。自信の無い人妻は監督に励まされ、夫との仲を縮める術のレクチャーを受けることに。徐々に過激になっていく指導も受け入れ、ちょっとだけを合言葉に性器を弄られ男根の挿入もOKする。体位を変えるごとに絶頂し、バックでは即イキ。真夜中の玩具責めでイカされまくった意趣返しに寝起きフェラ。朝のSEXでも腰を卑猥にくねらせ悶絶。