Toaru Majutsu no Index - Volume 13, Chapter 7: Changing Raindrops into the Color of Blood. Revival_of_Destruction.

The Return of the Heavenly Demon!I promised myself to live ordinarily for the rest of my life…….“Please be my father until I graduate.”He suddenly gained a daughter out of nowhere.

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

On the engagement night, after being betrayed by her fiancé, Ye Shu decisively turns around to marry Shen Shaochen, the number one abstinent male god of Jin City, in a flash marriage.After marriage, she thought that just by quietly giving birth to an heir to the wealthy family, all would be well.Little did she know that serving the great demon king would be so frustrating.Quit smoking, quit drinking, quit gaming!Ye Shu silently grits her teeth and endures, and on the day the baby is born, she brings the divorce agreement, “Mr. Shen, the task of bearing a child is completed, please sign the divorce.”Shen Shaochen: “Mrs. Shen, the agreement didn't say that only one child would be enough...”Ye Shu begs for mercy, “Husband, I was wrong! I won't divorce anymore.”(1V1, both male and female leads are clean and committed.)

Bai Yu traveled to the world of One Piece and activated the strongest swordsman system at the beginning.

No need to practice, swinging a knife will become stronger!

Thus, Bai Yu started his daily routine of wielding a knife.

Swing the knife 1000 times, and get the limit of physical strength – six styles.

Swing the knife 2,000 times to obtain the powerful Qinglong Sword Intent.

Swing the knife 3000 times, get three-color domineering.

General Huang Yuan: Bai Yu is the strongest rookie I have ever seen.

General Aokiji: My freezing ability was directly chopped into pieces by Bai Yu!

General Red Dog: Dangerous! My marshal position is about to change!

Hawkeye: Bai Yu is the number one swordsman in the world!

Since then, the name of Bai Yu has resounded throughout the world of pirates.

- Description from novelbuddy