With Gacha being the Eternal Void - Chapter 14. Legend Level Opponent

I accidentally changed the whole world, the resurrection of the dead, genetic variation, recovery of the qi, mountain and seas reborn, land and seas expanded and evil spirits have started to appear.

Ghosts are now commonplace. Some people now have three heads and six arms. Some people have obtained martial arts techniques and ordinary people are now just cannon fodder.

Fortunately, I have acquired an ability which can make various items mutate.

books into martial arts or cultivation manuals,

fruits into precious treasures of heaven and earth or poison that you can only imagine and…

weapons, that can split the earth or gain sentience!

- Description from Novelupdates

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of power enemies depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

- Description from Novelupdates

Ash Burn was just an ordinary gamer—an orphan scraping by in the real world—until he accomplished the impossible: beating the hardest VR game ever created, Apocalypse Online. But instead of the promised riches, he’s thrown into another world—one eerily familiar.It doesn’t take long for Ash to realize where he is: the chaotic, doomed universe of Heaven’s Favorite: Wrath of Gods, a novel he once read. Worse, he’s not the protagonist or even a supporting character.He’s just an extra.Armed with fragmented knowledge of the future, an unyielding will to survive, and the secrets of the Runes—mysterious power coveted by gods and demons alike—Ash must outmaneuver a reckless hero, power-hungry angels, and an inevitable war that threatens to consume everything.But as he treads the fine line between altering fate and unleashing chaos, he begins to realize something chilling: the endgame may not be as simple as he thought.In a world where survival hinges on power and cunning, can an ordinary extra change the fate of an entire world, or will he become just another casualty of destiny?Was he ever just an extra to begin with?Note: The image on the cover is not mine.

“From death to becoming the master of death, that's my story”[... ]Jake never got a break. Born unlucky, lived cursed, and died alone—struck by lightning on a rainy night. That should’ve been the end.But fate had other plans.In the space between life and death, he meets the goddess of Karma and Fate, who admits his entire life was a mistake—her mistake. To make amends, she offers him a second chance in a brutal new world ruled by magic, martial arts, and monsters.Before he's sent off, Jake draws from five Legendary Cards—and chooses the most powerful of them all: The Legendary Necromancer.Now, Jake awakens in a world where strength decides everything. With his unique talent, he can summon undead endlessly—and harvest power from the souls of his enemies.[You have enough Soul Shards.][Undead Dragon summoned.]But Jake is suddenly thrust into the Hundred Trials that comes once every hundred years in this new world, a deadly proving ground for the elite.To the others, he’s an outsider—unregistered, unknown, and unwelcomed. A threat to be erased.But Jake didn’t crawl out of death to get killed againLet them come.He has death on his side.