Under the Oak Tree (Web Novel KR) - Chapter 260

After waking up in the body of the Young Master of the Luo family, he finds he has the knowledge of hundreds of games and Light Novels. However, he finds his Dantian is crippled, so he can’t practice cultivation! Luckily, he has the Upgrade system.

Emperor Xianwu ninth reincarnation, only to break through the shackles, was besieged and killed by masters from all walks of life.

Fortunately, a ray of divine consciousness traveled across thousands of planes to the earth and entered the body of the dead young man, just to get rid of the anger in his heart and to regain that peerless peak!

- Description from MTL

After his parents died, Alex Roth had a plan: become a wizard. Through hard work, he was accepted into the world’s greatest university of wizardry—but fate had another plan.

On his eighteenth, he is marked as one of his kingdom’s five Heroes, chosen to fight the land’s great enemy. But his brand is 'The Fool', worst of the marks.

Rather than die or serve the other Heroes like Fools in the past, he packs up his little sister, his childhood friend and her cerberus, then flees for the university in hope of refuge, magic and to unravel the truth about his land’s evil.

There’s one small problem: The Mark tries to ruin magic while enhancing skills outside of divinity, combat and spellcraft.…

…that is, unless he can learn to exploit the hell out of it.

Born crippled with a rare disease, abandoned by his indifferent father, and hated to the core by his half-siblings, Xylen’s life was nothing but a tragedy.His mother died searching for a cure, and the only person who ever cared for him was cruelly taken away.Betrayed. Schemed against. Left with no way out.Lured into playing Fallen Realm Online with the promise of earning money for treatment, he fought desperately, doing nothing but living in the game and failing over and over again—only to be killed by his half-siblings right before completing a crucial quest. His reward stolen. His last hope shattered.With nothing left to lose, he ended his own life in the real world… only to wake up on the day the game was released.Armed with future knowledge, Xylen vows to seize this second chance. He will become stronger. He will protect the only person who ever mattered. And he will make those who wronged him pay.But fate had other plans.Instead of a normal start, he is forced into a demon fief as a baron—with an uncle who wants him dead. If he fails to kill his uncle and defend his land, his character will die, and he will be permanently banned. Worse, he is given a race despised by both NPCs and players—and given a class that should not exist.A mystery, fearsome, and despised character to the world. Feared by gods and demons alike. A walking catastrophe in the making.Yet, the more he learns about his new power, the more he realizes…This is no curse. This is his greatest weapon.And when the world finally learns the truth about Fallen Realm Online?Xylenia will be the name that shakes reality itself.