Paladin of the Dead God - Chapter 9:

For his sake, she was willing to abandon her career as the best actress and be his wife. With her own network, money and unscrupulous methods, she helped him rise to the top of the world. He, on the other hand, held another woman in his embrace and kicked her away with no mercy. It turned out that all he ever wanted was her rare blood type, her six-month-old child’s cord blood. It was her life… When she opened her eyes again, she returned to her 20-year-old self. Time repeated and her life rewound. In this life, she would live well.

A one-of-the-kind advanced game? Liberty Online.

Dungeon master class that needed to protect his dungeon core?

No system in place to revive monsters by magic, it's up to him to keep them alive.

Unfortunately, that's not all he has to worry about.

The whole population of immortal players has set their sights on his precious dungeon? And

Woah Dungeon got conquered in the game. Many celebrated, but he cries blood tears for his mistake.

Not able to handle the pressure, he died in remorse for how stupid he was his whole life.

But then something miraculous happens. He got reincarnated back in time - one year after the game’s release!

Armed with knowledge from his previous life, He will use this chance to achieve his every dream.

He strives to reach a height where no one dares to touch or even think about touching him.

This is the story of Roan - a man who will use all his power and strength to become king of Liberty Online!

An ultimate warrior, the one and only Alchemy Emperor, Ling Han, died in his quest to achieve godhood. Ten thousands years later, he, with the ‘Invincible Heaven Scroll’, was reborn in the body of a young man with the same name. From then on, winds and clouds moved as he set himself against the uncountable geniuses of this new era. His path of becoming a legend has begun once more. Of all eras underneath the heavens, I am the strongest!

- Description from Novelupdates

Xiao Ze, who was dedicated to the people and vowed to become a generation of Ming Jun, accidentally fell on a little lady.
The little lady was born beautiful and lovable.
So Xiao Ze accepted his life and got the name of fear.

ps:
①The male protagonist has no concubine, and he is dedicated to serving the country.

- Description from novelbuddy