ISEKAI AFFAIR: 10 Years After Defeating the Demon King, the Hero Cheats on His Wife With a Warrior Woman Who Lost Her Husband

Being struck by a truck and summoned to a fantastical realm to vanquish the Demon King turned out to be the defining turning point of Yuuta's life. Through that harrowing journey, he unlocked boundless abilities, ultimately liberated the world from darkness, and secured his place as royalty by marrying the princess. Now, a decade after saving the realm, the grand adventure has long since concluded, leaving Yuuta trapped in a monotonous, passionless royal marriage with no remaining battles to conquer. The sole source of excitement left in his peaceful existence comes from surreptitiously slipping away for clandestine liaisons with a former party member—a resilient warrior woman who also lost her husband. As he navigates this dangerous double life, Yuuta must rely on the legendary powers he once used to save humanity. This time, however, his extraordinary abilities serve a far riskier purpose: preventing his royal family from discovering his forbidden affair.