Isekai Affair: 10 Years After Defeating the Demon King, the Hero Cheats on His Wife with a Warrior Woman Who Lost Her Husband

After being transported to a fantasy realm, Yuuta achieved everything a hero could dream of: incredible powers, world-saving glory, and a fairy-tale marriage to royalty. But happily ever after isn't quite what he imagined. Now living as a celebrated champion in peaceful times, Yuuta struggles with the mundane reality of court life and a marriage that has lost its spark. When restlessness sets in, he finds himself drawn to dangerous temptations that could shatter the perfect life he's built. In a world where his legendary abilities are no longer needed for battle, Yuuta must confront whether those same powers can protect him from his own choices.