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

Yuta Shimabara is killed by a truck but reincarnates as a hero in another world. In this parallel universe, he successfully overpowers the notorious Demon King. Even with his impressive accomplishments, he becomes stuck in a dull and predictable routine ten years after his heroic deeds. He remains unaware that he is involved in a forbidden affair with Lucas, a female warrior who was once his ally in his battle against the Demon King. Will their hidden love for each other flourish into a full-blown romance?