Naruto: I'm Nine-Tails and My Host is Kushina - Chapter 138 : Vs Orochimaru

This world is sick; both Immortals and mortals suffer from a stubborn ailment known as Longevity.Under the influence of Immortality, various Cultivation Techniques evolve rapidly in grotesque and inexplicable directions.[Fetal Period: A baby is born with shriveled, powerless limbs.][Childhood: After 20 years, the Internal Organs completely decay.][Weak Crown Period: At 50 years, the flesh dries and withers.][Thirty Years Old Stage: After 100 years, the blood runs dry and gives birth to mutations.]I am an Immortal Seeker, and also one seeking survival.

On the night of Xiao Ke’s thirtieth birthday, he shared a table while drinking. The person he shared the table with was a cool man who fit all of his aesthetic desires. It was practically love at first sight.

He was thirty; he had reached that age where he was no longer the awkward twenty-something youth. He would pursue the one he liked without hesitation, no questions asked.

“I want you to give me a tattoo. I want to spend the rest of my life with you.”

- Description from Novelupdates

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!

Calamity descends upon a a tranquil world in the black of night, transforming it into a death game! This a a true apocalypse, but this is not the end of humanity!

- Description from Novelupdates