The swap ends, but the marriage does not reset. This is where the tragedy (or the addicting drama) begins. The husband might be haunted by images of his wife's pleasure. The wife might find she cannot look at her husband without comparing him to the other man. A new, painful dynamic emerges: Loving but damaged, or lustful but estranged.
Often, the story concludes with the couple still living together, sleeping in the same bed, but emotionally divorced—or, conversely, so consumed by cuckolding or hotwife dynamics that the "original marriage" is effectively dead, replaced by a new, darker contract.
You might ask: Why would anyone want to read about a marriage destroyed by a single night? The appeal, particularly for mature audiences (the "S" in "Married Couple S" often implies a seinen or adult demographic), lies in the subversion of security.
Community Discussion:
Understanding Cultural Context: