It Turns Out, They Are the Protagonists - Chapter 11: Classic Two-Pronged Operation

Have you ever wondered what it would feel like if your dick exploded? Or if voodoo or black magic actually worked?Axel got a crash course in both after leaving a one-star review for a trashy smut novel where the hapless author-san offed a minor villain. Little did he know that this particular author had some serious power.Suddenly, Axel found himself in the body of the very villain he was lamenting, right at the moment when everything was about to spiral into chaos.Now, with a second chance at life (and a brand-new set of problems), Axel must navigate the wild world of villainy—complete with explosive consequences and dark magic—if he wants to rewrite his story before it ends in disaster.

I’ve had enough of being transmigrated into books.

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

【Children, remember this. Among the fortunes of heaven and earth, three parts are the essence of literature, seven parts are martial, and one part determines the fate of the realm!】【...10...3+7+1... Hey? Ancestor, something seems off?】