Lilith: Origin of Succubi - Chapter 144

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

The first time Yan Zhaoge crossed worlds, he landed in a martial warrior civilization that was at the peak of prosperity. He ended up in the book storage building of the the Divine Palace, which collected and preserved the classics of the entire world from all fields of knowledge. However, a world class calamity struck soon after and even the Divine Palace was destroyed.

Yan Zhaoge’s soul once again crossed over, but this time he arrived in the same world, except countless years have passed.

With his brain full of rare books and classics from the era of peak prosperity, Yan Zhaoge’s second crossing over to the present era was like a gamer who was used to playing hell mode suddenly finding himself playing the game on easy.

That was just way too awesome.

But before that, he needs to fix a certain problem.

“I’m not a main character? In fact, I’m actually the main character’s love rival and the antagonistic Mr. Perfect senior martial brother? This script is wrong!”

- Description from novelupdates

In old times a boy named Luis had lost his parents at a very tender age, he never even got to know who his parents were. With his parents gone he had to be taken care of by his wicked aunt who hardly fed him once a day, in effort to get food Luis was adviced to steal by a strange book without minding the punishment of burning given to thieves. When Luis was caught he ran into the forest and the villagers including his aunt chased him down with torches.

“I think it's best I surrender now” Luis stopped running and was panting now.

“I think I can see him!” he heard the village blacksmith shout.

He took a little step backwards and down a hole he went.

“Noooooo!!!” Luis screamed as he went down the hole, the last thing he saw was a red glowing light and then it was lights out for him.

“What happened?” Luis groaned. “Where am I? And why is my body so cold” he said touching his arm

A screen appeard in front of him.

[ System revived ]

“What?”

That was where the true journey began.

Now the fate of mankind lies in his hands as he keeps completing tasks and quests to get stronger.

Luis keeps getting stronger but the question is:

Will he be able to stop Lucifer?