A Married Couple: The Wife’s Rampaging Desire (2000)

A Married Couple: The Wife’s Rampaging Desire | ある夫婦 ～暴走する人妻の欲情～ | Yumi, a devoted wife whose nights with her husband have grown cold and distant, has begun to indulge in intense lewd fantasies. Frustrated by his lack of desire and whispers that he’s turned to paid pleasures online, she succumbs to increasingly lascivious daydreams. One evening, her friend Maki confesses that ever since her own husband lost his virility, she’s been sneaking around with younger men—and she reaches out to Yumi with a daring proposition. Yumi agrees to step beyond every boundary she’s ever known. As two adventurous couples swap partners in a heady experiment, Yumi’s timid restraint is swept away in a torrent of raw sensation. Each stolen touch, each gasp of surprise, ignites her deeper cravings until she’s lost in a world where every caress pulses with wanton release. In this bold, erotic exploration of marriage, intimacy, and the secret thrill of “email swaps,” Yumi discovers how far she’s willing to fall—and how sweet the depths of desire and lust can be.