Seirei Tsukai no Blade Dance - Volume 19, Chapter 3 - Holy Lord

Before meeting Shen Xu, all Zhen Yuan wanted was to seek the dao and cultivate to the peak. After meeting Shen Xu, he thought the dao was important, but his wife was the most important.When Shen Xu transmigrated into a book, he mistakenly believed that Zhen Yuan was not a character in the original story. What he didn't expect was that his husband was the most mysterious and powerful unnamed character in the original novel.

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

Lugh woke up to find that he had transmigrated to a hundred million years later.

On the eve of the millennium, a sixteen-year-old Chinese boy left his hometown and came to Europe just to play football to support his family.

But he didn’t expect that an adventure would make his football career unique from then on.

Twenty years of ups and downs, he has won countless honors, looking back, Ronaldo, Zidane, Ronaldinho, Ronaldo, Messi, Mbappe and many other stars are all shining, But there is only one king of the ball, hanging high in the sky like the sun, shining forever!

(No system, talent improvement + hard training)

- Description from novelbuddy