The Wrong Way to a Demon Sect Leader - Chapter 60

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

Seth Evergreen was the greatest scientist of his time. With his insatiable hunger for knowledge and groundbreaking discoveries, he had made Earth reach new heights of prosperity and scientific advancements.

But everything changed when he stumbled upon the life equation, cracking it and discovering the fabled 'healing factor.'

Seth believed he had found the key to eternal youth and announced his discovery to the world in the form of a new drug. But then the mutations began. The human body, it seemed, was not meant to be perfect.

The drug's effects began to spiral out of control, creating monsters out of those who had taken it. After spending 7 years trying to remedy his mistake, he finally gave up and pulled the trigger.

But when he opened his eyes again, he found himself in a world unlike anything he had ever seen before. The world of Gilea, where magic and mana exist, and the strong prey on the weak.

Determined to complete what he had failed to do in his last life, Seth, now known as Silas Skylark, sets out to become the strongest mage, to take Gilea out of the dark ages and into an age of prosperity and change.

Unbeknownst to him, the life equation branded itself into his soul, morphing his body and mind into a being with only one goal...

To evolve!

But as the shadow of his past looms over him and powerful forces seek to control him, Silas must overcome weaknesses and reach new heights.

Will he succeed in his quest to bring prosperity and change to this world, or will his past sins come back to haunt him once again?

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The entire world knows that the heir of the Jiang family is smitten with Miss Lu, but Miss Lu doesn't see it that way.Lu Jing thinks Jiang Ye has too many unbearable traits and doesn't want to indulge him.One day,the heir runs to the Lu residence.“Lu Jing, when will you finally grant me a formal status?”“Lu Jing, don't accept their things, whatever you want I will give you!”“Lu Jing, you are mine, and you can only ever belong to me in this lifetime!”Lu Jing: “Scram~ Stop disturbing my sleep!”(1v1, reunion after separation, pursuing wife to the crematorium.)

…but it seems pretty doable.