Goblin Kingdom - Volume 1, Chapter 26: Legend

Killed by a Sage Emperor and reborn as his 13 year old self, Nie Li was given a second chance at life. A second chance to change everything and save his loved ones and his beloved city. He shall once again battle with the Sage Emperor to avenge his death and those of his beloved . With the vast knowledge of hundred years of life he accumulated in his previous life, wielding the strongest demon spirits, he shall reach the pinnacle of Martial Arts.

They called him the Shame of the Clan but before that, Vale Athrimir was born a prodigy, one of the rising stars expected to lead the next generation of the Clan. But on the day of his manifestation, he was awarded the Forbidden Mark Order, a power feared and loathed throughout the realm.In an instant, his world collapsed, his friends turned their backs, his father disowned him, and he was cast into prison. After three years of starvation and torment, he was thrown into the Borderlands, a labor camp where the forsaken dig rocks until they die.But Vale refused to break.With nothing but his rage and ambition, he clawed his way free and began to build. Starting with outcasts and exiles, he forged the foundations of something the world had never seen, an empire that would span nations, topple kingdoms, and unite the fractured lands under the Eternal Skies.The Forbidden Mark Order carried a terrible secret, and with an Ancient's Inheritance in his grasp, Vale discovered he possessed power beyond measure. Now, he would transform from prisoner to emperor, from outcast to conqueror.From the ashes of betrayal, the Universal Empire would rise.

With the revival of spiritual energy and the breakdown of the order of species, it is a difficult test whether human beings can still stand at the top of the biological chain.

(There is already an old book, The Strongest Descends in the City, you can read it.)

- Description from novelbuddy

They called him useless. A Class E farmer in a world where strength meant survival.Betrayed by the woman he loved, beaten by a power-hungry King, and left to die like trash, Isaac thought his story had ended.But death was only the beginning.Beneath the earth, sealed for thousands of years, a forgotten being awakens, an ancient force of ruin once feared by angels and demons alike. When Isaac agrees to its desperate offer, he doesn’t just survive… he becomes something else. Stronger. Colder. Hungrier.Now reborn with a forbidden power that rejects magic itself, Isaac walks the line between man and monster. Each time he unleashes the Abyssal Overdrive, his strength grows, but so does the Corruption threatening to devour what’s left of his soul.To protect the innocent, he must become the very thing they fear.To destroy the kings who shattered his life, he must embrace the darkness within.Enemies will fall. Secrets will unravel. And when the kingdom of Carreon learn that Isaac is still alive… it will already be too late.The world shunned him. Now, it will kneel.