In This Life, The Greatest Star In The Universe - Chapter 27:

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

Liam was a nobody, whether it was grades or sports or appearance or social life. Not because he didn't have a brain but because his luck was just that bad. However, everything changed when a mysterious game called 'Evolution Online' was suddenly launched. The world he knew changed upside down!

There was blood, death, and carnage everywhere. While everyone from small companies and big governments scrambled to get a foothold on this mysterious video game, some people's lives turned for the better and some for the worse.

Liam, unfortunately, being the latter, still somehow ended up at the bottom of the barrel. His insignificant life was squished like an insect and his loved ones were destroyed right in front of him. In the end, he was already dead without ever having a single chance to fight back.

But his story did not end there. Liam found himself returned back to the time before everything began!

Watch as the young man who was once a nobody reaches for the pinnacle of strength and power wreaking havoc on the world that destroyed him once! This time everything will be different!

In 2077, the gods sent potential successors across the cosmos to Earth for the God Trial. The result: the apocalypse and the rise of history’s most unlikely Harem God candidate.

Leon Traxler was a sociopath that faked his emotions and had a phobia of using women for sexual desires. Yet he chose the power to build an overpowered harem because finding strong, loyal companions during the apocalypse was unlikely.

It was a calculated decision, but he got something he hadn’t bargained for.

Emotions.

With a power that leveled him up through emotional milestones and a system that made him feel them for members, he quickly amassed power and decided that the apocalypse was a blast.

Driven by a desire to make his violent yanderes happy, a love for animal ears on women, and a narcissistic wet dream to be the only man on earth, he decided to partake in the God Trial.

His strategy? To raise an army of women, build a city for his harem, and start a cultured civilization that would naturally end when he died.

Join Leon as he becomes a celebrity on god social media, rises to power on earth, and lives life as a playboy in the apocalypse.

With less than a year left before the night of genocide, Uchiha Habara decided to run away.

As a result, he never expected to activate the system that had not been activated for fifteen years, and was kidnapped by the Uchiha clan.

Fortunately, the system is not without rewards, and the stronger Uchiha is, the richer his rewards will be.

So what he can do now is to make Uchiha great again!

- Description from novelbuddy