The Undead King of the Palace of Darkness (WN) - Chapter 4: The Investigation

All her life, Eleanora did everything to make him love her but in the end, what she got from him was her execution for a sin that she never did.

Before dying, Eleanora coldly stared at his bloody red eyes as he lifted up the sword to execute her…

“I will never forgive you for killing me and my child.”

For the first time in her life, She saw his anxious gaze.

But it was too late as the sword in his hands had already landed on her neck, separating it from her body.

Eleanora finally thought everything was over but then she opened her eyes again, to find herself back in 12 years in the past when all the misfortune was yet to happen.

She was firm to change her tragic ending this time but it was not only her who changed…

“Even if you hate me, you can only be mine in your every life… My Empress.”.....

There are a total of seven sins, and a revelation is made to a young man named Alex that he is destined to become a demon lord, more especially a demon lord of sin called LUST.

It's not like he can change that and because he always knew something about himself was different—not in a physical sense, well, maybe a little—and not in a mental sense—but rather because he is thrown into a demonic war that compels him to accept his new reality.

He was only aware of a difference in himself. Relating to him and the ladies who are drawn to him... Well, it was more or less like he was a magnet in front of all the girls, and all the girls were drawn to him like a metal.

The sky thunders, Fang Yue, the nail household, dies on the street, the heavenly court blackmails, obtains compensation, reincarnates, and sees how Fang Da Devil disturbs the universe and upset the world.

- Description from MTL

The servant looked at the grieving princess. “Your Highness, the Regent Prince sent your scholar fiancé to the Western Butcher’s daughter!” 

The princess gritted her teeth, speaking to her servant that it matters not as she has other suitors in line. Many days later, much to her dismay, the servant ran in a hurry. “Your Highness, the Regent Prince expressed his intention of becoming your suitor! All other men in line were sold to Gou Lan Red District!”

The princess was distressed. She said to her servant it matters not. She’ll soon be married to Prince Fuma. Then the uneventful came. The servant once more ran to her, almost tripping in the process. “Your Highness, Prince Fuma was imprisoned at home! Meanwhile, there’s a red sedan chair waiting at your residence for your marriage! It was led by the Regent Prince!

The princess was stunned. For a day such as this to come, it seemed impossible. This nothing but a sad story of a female boss crossing back in time to hold the thick thighs of the big boss. But while raising him, she was eaten in the process.

- Description from Novelupdates