夫婦円満レシピ～交換しない？一晩だけ〜

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Nishina Shiho, is a young mother and raises her child while working as a writer at home. Although she enjoys her life and has a perfect husband, she is troubled by her lack of sex with her husband, Kosuke, who has ED. Due to this, Kosuke suggests that they attend a "couple exchange party", where couples change their partners for various reasons.