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Embracing a man superior to my husband, I instinctively climaxed repeatedly.

Her instincts told her to be embraced by a male superior to her husband...
Imaizumi Rie is a housewife in her ninth year of marriage.
She is blessed with children and lives a life of luxury in her own home, but she has never been able to climax vaginally with her husband... and she feels that her life is somehow lacking.
One day, Rie visits her mother's friend Ayami at her townhouse.
There, she is told by Ayami that she is actually having an affair with her child's homeroom teacher.
Recalling this incident, Rie consoles herself with fantasies of an affair, but the man she imagines is Ayami's husband, Yukihiko!
The next day, Rie meets Yukihiko.
He looks at her passionately, says "I've always wanted to try this," and pushes her down. Is her fantasy becoming reality...?!
Yukihiko, who is thicker and harder than her husband, penetrates her, and for the first time, Rie experiences a climax inside her vagina...