MTL - People Are In Konoha, You Call This a Ninja Tool - Chapter 500

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

NightmaresCreatures that appeared from the unknown a millennium ago continuously threatened humanity, pushing and pressuring people who once inhabited it aside. These Entities brought the world into utter chaos, furthering their influence to what was once a land that belonged to its rightful owner.In the end, humanity was forced to adapt.They kept trying different ways to fend off the Nightmares, and the solution they finally settled on was… why not become one themselves?Cesar Sparrow, an unfortunate fellow born in an era full of corruption, horror, and the unknown, was desperately trying to escape from its clutches… until he found an enigmatic, dying eyeball that latched itself onto him.“Hehehe, what a great fellow you are,”“How are you talking—. Just what are you…?”The dying eye that latched itself to his empty, bleeding eye socket chuckled, its voice groggy as it answered.“What do you think am I? I’m just an old and weak Nightmare, Sparrow. Though, you can call me Eyes of Deceit. And I'll borrow your body for a moment if you won't mind. Hehe,”“No, why would I give you my body?! Get the fuck out!”Entrapping himself in a series of encounters, uncovering secrets that belong to the Nightmares… and the humanity wanted to remain hidden, Cesar Sparrow ventures into the unknown.To keep struggling, to keep resisting, to keep persevering… will all that be enough?Will he be finally the one to break the chains humans had found themselves in, ending a millennium of suffering? Or succumb to the curse of the Nightmares?

A college student was returning home after studying abroad for several years when the end of the world happened. A dragon appeared out of nowhere and attacked the plane he was in, thanks to an incredible amount of luck and his quick-thinking, he managed to survive the plane crash only to get stuck on a tropical island. A weird system took over the world and brought monsters to Earth. While nations collapsed and the world as a whole was being destroyed by ridiculous monsters, Leon was stuck on a godforsaken island with no chances of being rescued. What will happen to him? How will the world change while he is away? Will he even manage to return? The story, all names, characters, and incidents portrayed in this production are fictitious. No identification with actual persons (living or deceased), places, buildings, and products is intended or should be inferred.

Dr Dalton Wyatt, a world renowned Scientist and Inventor is transmigrated to the body of a high school student Dalton Wyatt who committed suicide due to unfortunate circumstances and complicated life.