The Ghost of Vermil - Chapter 33: Apple IX

Transmigrated-into-another-world-three-good-citizen Gu Xizhou, in order to survive, became a demonic cultivator. No matter how bad or evil, he adapted.

But then…but then he transmigrated back.

The returned Gu Xizhou was very angry. The student that offered his body in order to resurrect him had used a formation that was purposed for summoning evil spirits. He, Gu Xizhou, prior to transmigration was a law-abiding citizen that upheld core socialist values, a three good citizen representative. So how come after transmigrating and coming back, he had become a heinous malicious spirit?!

In each and every one of the spirit worlds, the ghosts and spirits originally lived a Heaven is first and I am second kind of happy lifestyle, that is until in the unlimited spirit mission worlds, inexplicably and out of nowhere came a demonic cultivator.

The ghost and spirits: QAQ

- Description from Novelupdates

Ethan Millers was just an ordinary man with an ordinary job — until one unplanned act reset his karma to zero. In a universe built on balance, this was not a miracle... it was an error.Erased from the world, Ethan awakens in a place without time or space — the No-Where. With nothing but his thoughts, he spirals into madness, invention, and eventually, creation itself.He imagines powers, technologies, divine systems, and worlds beyond comprehension — until the void bends to his will.Now, known as Zane Creed, the strongest existence in the cosmos, he descends into a new world with overwhelming knowledge and unimaginable power.And what does he choose to do with it?Become a teacher.After all, what better way to reshape a world… than to teach it?

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