Toaru Majutsu no Index: New Testament - Volume 16, Chapter 4: A Sudden Change that Tells of Ruin - Operation_Right_Hand.

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

Wei Shao’s part.

At first, Marquis of Yan, Wei Shao, was advised to marry the Qiao’s daughter : “The Qiao’s family has been in the Eastern County for three generations, although declining, but deeply honored, like the hundred-foot insects that die but not stiff. My Lord is majestic and powerful. The family of Qiao has begged the Lord, so why not take the daughter of the Qiao family and use her?”

Later, Wei Shao finally understood and hit his own face. It’s hurt, really hurt.

Xiao Qiao’s part.

Hmm, men are indeed cheap bones. The Emperor is the same.

……

- Description from Novelupdates

In the year 2093, mysterious energy known as mana descended upon Earth for the very first time in millions of years. People began to spontaneously awaken, allowing them to gain supernatural abilities, classifications, and affinities.

Simultaneously, dungeons with immaculate treasures and horrid monsters began to appear all over the world, forcing humanity to stand together in order to survive.

Lloyd Elrod was a simple boy at first. He was a boy with no power and little to no social standing, yet that all changed on the day before his awakening ceremony. The day he became what the humans and the other races saw as a monster.

[Welcome to the Void]

It was the day he became a Void Walker. A race capable of growing faster than any other. A race with individuals capable of putting an entire civilization created by a multitude of races on the brink of collapse and walking into the Void itself.

Having become a part of the most wanted race in the universe, Lloyd is forced to hide and fight to keep his freedom. In order to not be restrained by those he once saw as his brethren, he must become strongest.

Will Lloyd be found out? Will he finally earn his freedom and have control of his own fate? Join Lloyd in his journey of joy, sorrow, grief, and pain as he climbs to the top and becomes the most powerful creature in existence.