MTL - Concealed and Blended: Fendai - Chapter 43

“Xiao Chen, please give us another chance!”Xiao Chen stared at them with a loathing gaze. “Ten years ago, you looked down on me. You showed up at my doorstep, forcing me to break off the engagement. My dad was so enraged that he was hospitalized. Now you're actually here to beg me?”It started off as an ordinary decline of a rich family. However, to everyone's surprise, the insignificant Xiao family actually gave birth to a bigwig who was powerful in the politics, military and business world. Just when all the major families could not stand the pressure brought forth by Xiao Chen and were forced to apologize, they discovered that he had disappeared!At the same time, in a small family of a small town-Xiao Chen exclaimed, “Mother-in-law! I am really here to repay your daughter's kindness. There's nothing else between us!”In order to pay back his debt of gratitude, Xiao Chen hid his identity and came to this small town. But his mother-in-law treated him in a totally unexpected way!

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

In a world where martial artists reign supreme, strength is everything. Unfortunately, that logic doesn't apply to a certain Florida Man.

Refined in the nuclear fallout wasteland, Leo was the strongest mutant alive. He carried an alien artifact, allowing him to exchange his lifespan for modern items. After 50,000 years of solitary life in a humanless world, he collected enough lifespan to transmigrate to another habitable world.

Leo was later thrown into a mysterious planet. He soon discovered that his body produced radiation, and it mutated the surrounding plants and grasses. Worrying that he might ruin the beautiful planet, he chose to live in seclusion.

Unfortunately, the local population soon discovered his existence, and a misunderstanding ensued.

“Did you know? I was once the most powerful person in the world, undefeatable even by the gods. If only I can retrieve my body, I could resurrect once again.”“So what?”“So... who has hidden my corpse!”