The story follows Reiji and his wife, who embark on a getaway to a traditional Japanese inn with another married couple. Their goal was to reconnect and perhaps conceive a child, but the weekend takes a dramatic turn when Reiji is seduced by his friend's wife. Simultaneously, his own wife finds herself drawn into a passionate affair with their mutual friend.
The series hinges on a critical, life-altering decision made during a couples' trip to an onsen spa. The couples, seeking to break the monotony of their married lives, decide to swap partners, leading to a "night of no return" that irrevocably changes their relationships and emotional landscapes.
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Ryo scoffed. Miki hesitated. But that night, after another silent dinner, they both queued in without telling each other.
Disclaimer: This guide is for informational purposes only. Streaming copyrighted content from unofficial sources may violate laws in your region. Always support official releases when possible. The story follows Reiji and his wife, who
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Keep in mind that this anime contains mature themes, explicit content, and is intended for adult audiences only. If you're interested in watching, please ensure you're of the required age and have the necessary maturity to handle the content. The series hinges on a critical, life-altering decision
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The longing for passion that leads to risky behavior.
As of April 2026, the series can be found on several platforms: