The Retired Hero is an Extra - Chapter 21 - : Outside

Alexander was the greatest tyrant in history. His cruel, brutal and vicious reign struck fear in his enemies and allies alike. But that all ended when he was betrayed by his own people and beheaded by his archrival. As Alexander’s consciousness faded away all he could think of is all the faults he made, how he could have avoided them, how unlucky he had been, and his wrath and unwillingness to die at the hands of the man he hated most! But unexpectedly he was given not only the answers to these questions, but also a second chance to right all his many wrongs.

Before his death, he was the only sword cultivator in the whole world, who dedicated his entire life to the path of sword immortality.

When he opened his eyes again, the world had completely changed. He began to cultivate the path of sword immortality again, slaying the heavenly way, shattering the universe with his will, and achieving the realm of sword immortality!

- Description from Novelupdates

For better or for worse, till death do us part. That was their vows at the altar, but he broke them first..He claims an open marriage is the solution to their childless marriage and that it's to protect her own interests. But all Braelyn sees is a prison built from guilt and lies.One heartbroken night, she stumbles into a karaoke bar and into the arms of Lucien. A man shrouded in mystery, rebellion and danger. His very presence tells her to run but it also gives her the solace she craved.She never expected to see him again after she ran, forgetting his sinful existence, but life wasn't done making a joke out of her.Lucien isn't just any man, but one who can destroy everything she believes in. The man she was never meant to meet. Her husband's uncleThe black sheep of the Volkov dynasty. A man whose desire will ruin her. Lucien knows she can't be his, but he was never a man who respected social norms. He doesn't care about anything but her every sin and touch.All he wants… is her, no matter how sinful it gets.