Lucifer's Descendant System - Chapter 9: Super Boss

After his qi center is destroyed, a martial arts instructor of the Blood Demon Cult is assigned to learn and research the martial arts of four captured murim masters. However, when the Cult betrays him and decides to kill him, he fights back and everyone in the Cult dies, including himself.He then mysteriously wakes up in the body of Baek Suryong, a young martial arts instructor in the rural countryside with a disease that will kill him within three years. He realizes that the martial arts he had learned holds the key to healing his new body’s illness, but in order to do that, he needed money. A LOT of money.Baek Suryong thus embarks on a journey to become the Star Instructor of the Azure Dragon Martial Arts Academy, and earn enough money to save his own life! Perhaps he would even manage to educate some kids along the way…

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.

Ye Xiao was a superior cultivator in his previous life. The three factions of the realm kill millions of people every time they attempt to seize cultivation resources. Wealthy towns turn to wastelands in just a single night. They cover up their crime with an assertion that the towns were suffering from pestilence and disasters.

They forcibly hold all the resources for cultivation, monopolize all valuable practice materials, and keep outsiders from cultivating so that only their three factions could cultivate in the realm. Ye Xiao declared war against the three factions in retaliation for their actions. He fought alone and ended up dying in vain. However, he is reborn into the mortal body of a 16-year-old boy. He will use the powers he cultivated in his last life and slaughter his way back into the Realm. The story begins!

- Description from Novelupdates

Hagoromo Gensou transmigrated to the Naruto world and, through his own efforts, became a prominent figure in the ninja world.Until one day, the newly appointed Five Kage teamed up and ambushed him immorally. It was only then that the system finally appeared, claiming it could help him rise to become the strongest in the ninja world.However...Just as he was about to confront the Five Kage head-on, Gensou silently looked at the first task issued by the system.[Quest: Ninja School Comeback Initiated! Please defeat your dead-last classmate, Uzumaki Naruto.]“System, do you know what year it is now?”[Year 60 of Konoha]“Right now, it's Year 2 of Konoha! Is there something wrong with this system?!”...Many years later, Gensou opened his eyes again, standing on the rooftop of the Chunin Exams building. Looking at the Third Hokage, who was ready for battle, he smirked slightly:“Although it's a few decades early, I finally made it.”[Raw: 火影：我都硬刚五影了，系统才来]