Dark Lord Seduction System: Taming Wives, Daughters, Aunts, and CEOs - Chapter 32: Sex Ed by the Gods, SP Farming

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

This is the story of a person who transmigrated into a world with a radically different worldview.

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

Jin Rou, the youngest Celestial King, was being restricted to go outside by his father for some reasons. Thus, Jin Rou was fed up.

And so, he made his ‘Grand Plan’ of running away.