The Strongest Brother Lost His Memory - Chapter 69

800 years ago, 3000 dimensional gates opened across the entire world. In that moment, it was as if 3000 different colored eyes opened across the world as hordes of monsters swarmed out of these gates like tears.

Some could destroy city walls with one strike; They had bodies the size of a giant and fed on humans

Some latched onto humans, absorbing their bodies’ nutrients and enslaving humans

Some infiltrated the humans’ cities, disguising themselves as normal human beings while feeding upon human blood to sustain themselves.

In a night, the Human race fell to the bottom of the food chain.

The world had turned into a paradise for monsters…

- Description from Novelupdates

After a tear in reality pulls Kagari Shuya into a white room he discovers a futuristic interface for reincarnating in a different world. After looking through the different races and skills he unlocks a new race, Lucivault, a type of vampire with none of its characteristic weaknesses. All set to start his life in a new world, Shuya is confused to discover that he is enveloped in darkness. As it turns out something went wrong when he was transported and instead of appearing where he was supposed to, he appeared in an underground cave. Shuya faces untold dangers, runs for his life, before finding his way out of the underground world. After escaping he meets his Shishou and begins to learn to fight with a spear. There is also a cute black cat named Rollo.

New Synopsis by a reader:Embark on a gripping journey through a mysterious fantasy world where one man's resilience is tested to its limits. He is cast into this unforgiving world with nothing to his name. Our protagonist is swiftly swept into the ranks of the Legion, where survival is a daily struggle. Amidst the chaos of battle and the constant threat of danger, he must hone his skills and unlock his latent potential, navigating a landscape fraught with peril and uncertainty.With each trial and tribulation, he discovers new depths to his abilities, grappling with a burgeoning magic system and the harsh realities of his surroundings. This gripping slice-of-life narrative blends elements of LitRPG with a captivating tale of growth and survival as our hero fights to find his place in a world where nothing comes easy and every victory is hard-earned. Will he rise to the challenge and survive amidst the chaos, or will he succumb to the perils that lurk at every turn?

I, Zatiel, Abyssal Lord, Ruler of Death and Destruction, Nightmare of Dys, have AWOKEN!!!!!.

His life contains events that can shake the universe:
-Fighting against Tiamat, Creator of Evil Dragonkind, in the first circle of hell, while billions of demons and devils butcher each other beneath them
-Start a World War against the Heavenly Race, and transform himself into a Golden Sun while he slaughters their greatest warriors, the Archangel.
-Enter the Final Gate and fight against the Outer Gods.
-Tearing the nine levels of Baator during his battles against the Prince of Evil, Asmodeus.

With his memories as a ruler of the Abyss and a Universal Existence, Zatiel will rise again.