Oathbreaker: A Dark Fantasy Web Serial - Chapter 8Arc 6: : Wave Crash, Thunder Roar

Death followed Achilles like a plague.Finding himself at his lowest point, he comes to realize how little value human life held as terrifying Advanced Humans and Evolutius Beasts waded across the Colonies of this world.About to lose the only remaining person close to him by falling into the jaws of an Evolutius Beast, a spark bloomed inside of him, and he saw a distinct blue panel appear before his eyes![Achilles Maxwell][Assimilation]:: -[Existence Corruption Value]:: 0%[Complexity]:: NegligibleA simple spark. And yet the changes it brought…were limitless!

I am the sword.

Killing a man amidst a thousand miles, no one dares take ten steps.
Killing a man amidst a thousand miles, no one can take ten steps.
Killing a man amidst a thousand miles, ten steps? Not possible!

I am the sword, the sword is me,
On the path towards heaven, each shall wield their own.

- Description from Novelupdates

This novel is also known as Master Fu's Mysterious Darling Wife

She is the The Young Miss of Military family Shen, her face is peerless, her temperament is cold, and she is her family’s treasure, but isn’t accepted as one’s child by her mother;

He is The Sole Heir to the top giant Fu Family, his power is unparalleled, indifferent high-born, the captain of the mysterious military force, and the youngest commander-in-chief.

Because of her grandmother’s wishes, she married him at lightning speed. She thought that it was a marriage that she needed, but she didn’t expect to be greeted with his extreme pampering.

- Description from Novelupdates