One Piece: Human God - Chapter 23: Sky Island II

After what seems to be a plane accident,

Su Bai Master Su was seized of his power and unexpectedly reincarnated onto a cowardly distant nephew.

Who said that you will lead a dull life after rebirth?

The ‘Jade-Faced Yama’ who once ate both the black and white path

vows to take back the power that once belonged to him step by step.

Do you really think Master Su is a rice dumpling for everyone to push around when he does not display his wrath?

- Description from Novelupdates

A mysterious force has descended upon Earth, giving birth to another terrifying civilization. At the age of eighteen, everyone is forcibly sent into the Horror Game World. While people struggle to survive, submerged in fear, Qin Nuo discovers a unique ability: by influencing the emotions of ghosts, he can earn rewards from the system. Moreover, with each completed mission, he can establish his own enterprises within the Horror World.Thus, Qin Nuo's journey begins:Working as a server at the Nether Springs Restaurant,Serving as the attending physician at the Death Hospital,Becoming a waiter at the Netherworld Hotel,Teaching at the Terror Academy...As Qin Nuo zealously completes one mission after another, he eventually realizes that he has become a formidable figure in the realm of ghosts.

One day, a tower appeared in the skies of all the major cities…

Li Feng found himself in a dangerous demonic sect where he could be killed at any moment. But he was worried as he had his ultimate upgradation system.Blood Essence Pill -> Blood Origin PillTurtle Breathing Mantra -> Xuanwu's Great IsolationPhantom Spirit Fox -> Nine Tailed Celestial FoxJust like that, Li Feng was confident that he would be able to become stronger at a very fast pace and would be able to survive in this dangerous demonic sect. Not only that but as his parents were killed by some of the disciples of this demonic sect, he was also going to take his revenge on them. With his system's assistance, Li Feng was confident to reach the pinnacle of cultivation.