Kuro no Maou - Chapter 452

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

[+18 Novel]Highschool fantasies? Taboos? Blackmail? Neighbors? Twins?Come and witness it all.Max, a fat fuck tech genius was transmigrated to a parallel world similar to earth but not earth, after having regretted not living his youth to the fullest while spending his time as an adult cupped on the desk all day long.Reincarnated in the body of a dead fifteen year old, also Max. A year later, he successfully activated the Taboo System that came to this world with him. And began receiving all sorts of Taboo Tasks within the school premises in order to fulfill his Taboo Quest: SSS Ranked Taboo Student.A school with hierarchy, filled with rich scions from all over the world, and world class teachers. What could really be going on beneath the surfaces.CONGRATULATIONS![Taboo System Activated][---- 100%][SSS- A lonely loser lifestyle without being a loser. Accomplished.]Ding![Taboo Task][Target: Sophia]Growing from a fat decrepit loser in just a year, he went from being a nobody to a world class student while being the bane of every lady he encounters.

The dark BOSS, who had the fortune of becoming Earth’s last living human, brought with him his loyal, second last human to die, little brother to be reborn.

What does he want to do after being reborn? Is it world domination or world annihilation?

BOSS expressed, he was completely uninterested in these kinds of things, he only wants to die.

In order for him to make his boss who always seeks death to continue living, little brother is completely unscrupulous, serving his boss to make him comfortable and cozy, then later helplessly discovered…. The BOSS’s behaviour is more and more abnormal!

- Description from chrysanthemumgarden

A tale about the former leader of a special organization served under royalty, now leaving his past life behind and unintentionally getting involved with the martial world.

- Description from Novelupdates