Nine Heavenly Thunder Manual - Chapter 298 - Devil King’s Castle

Three thousand years ago, gods and Buddhas disappeared all over the sky, and the inheritance of practice was broken. It was not until the ancient civilization was destroyed that spiritual energy recovered. Ten thousand races took advantage of this to invade.

Five hundred years later, the human race gradually rose up and began to fight for control of the land of China, and counterattacked all races.

Three hundred years later, Fang Yi, the Lord of the Great Dao, slaughtered all clans, destroyed all the heavens, stepped out of the myriad realms, and fought against the Dao of Heaven.

In desperation, Fang Yi sacrificed blood to eight hundred small worlds, reversed time and space, and was reborn nineteen years old.

In this life, he wants to live a more relaxed life, perfect his Dao Xin, and conquer the Dao of Heaven again.

- Description from novelbuddy

Aaron, a wildlife biologist, became a military strategist right after a global war between nations began.He never wanted to participate in the war but he had to, because he wanted to continue his studies on endangered species the moment the war was over, but to his surprise, everyone in his unit were killed, including him, and the next thing he knew, Aaron woke up in the body of a young noble having a similar name to his.However, he also noticed he had awoken in a world different from Earth.In this world, demonic beasts ran rampart with only one thought in mind, causing them to feed on anyone they see, be it humans, elves or even magical beasts as well.During his first encounter with a magical beast, Aaron awakened a system which allowed him to bond with magical beasts and to obtain terrifying abilities from these bloodcurdling magical beasts, so he used his experience as a wildlife biologist to help make it easier for him to bond with these beasts.However, Aaron also noticed he could evolve these beasts if their loyalty towards him had reached a certain level, so he vowed in his heart to grow strong enough to protect those he cared about in this world with the hope of living a happy, peaceful life where he'll be able to focus fully on his passion as a wildlife biologist.

‘Is this shit actually happening to me?’That was Kael Carter’s first reaction when he saw a bunch of priests kowtowing in front of him, worshiping him as the ‘Hero.’For a good while, he actually thought it was just another one of his dreams, until reality hit him.It was real…He was actually summoned to a fantasy world where magic exists!A world of Beast Tamers!A world where Humans and Magic Beasts grow stronger together!A world Kael, as its supposed Hero, was meant to protect!His response?“Fuck no!”He might be brave in the comments section, but who the hell takes that seriously!?How was he supposed to protect an entire world when even opening a jar of pickles was like a life-or-death battle to him!?He was no Hero!And to prove it, he decided to place his hand on the ‘Orb of Resonance’ that was supposed to ‘confirm his identity as the Hero.’But then,[Ding!]He heard a sound.[Talent Awakened.][Talent Name: Dragon Genesis][Talent Rank: SSS Rank][Description:][Power to turn any beast with even the slightest trace of Dragon Blood in them into a full-grown Dragon.]‘What in the hell…?I—I can create Dragons…?’Kael couldn’t believe what he was seeing.In a world where Dragons were living Legends—creatures of unparalleled strength, wisdom, and power,In a world where entire Kingdoms tremble at the sight of just one Dragon.He could create… an army of them?

Have you ever thought a monster that has a job of a summoner and a tamer

what should it call itself Monster Summoner? Monster Tamer? but he itself was a monster too

Watch as our mc travels the world as an reincarnated human who turn into a monster