Naruto System in One Piece - Chapter 413

Monster Fusion: Rise of the Vice Sect LeaderRay Darkheart was cursed forever unable to cultivate, even after reincarnation. No technique, no bloodline, no divine intervention could change his fate. His body rejected all forms of cultivation, leaving him powerless in a world where strength ruled.But fate was not so absolute.One day, he awakened the Monster Fusion System a power unlike any other. By fusing two monsters of the same rank, he could create something far stronger, evolving them beyond their natural limits. Each fusion carried forward enhanced traits, bloodlines, and abilities, forming creatures that defied logic itself.Yet power came at a price.To advance, to unlock the system’s hidden functions, he needed spiritual stones countless, unending spiritual stones. Every ability, every upgrade, every path forward demanded a fortune. Alchemy, formations, talismans, swordsmanship nothing was beyond his reach, as long as he could afford it.Thus, Ray chose the only path left to him.If the world would not grant him strength, he would take it for himself. As the Vice Sect Leader, he would amass wealth, plunder resources, and rob cultivators blind not for greed, but for survival.A powerless man? No.A schemer, a thief, a legend in the making Ray Darkheart would rise.[sect building] [business empire] [disciple cultivation] [comedy] [alchemist] [formation master] [sword dao] [system] [monster fusion] [resource management] [plundering] [strategic growth] [power progression] [cultivation world]

In the midst of a mall parking lot turned battleground, Korig stands with a crowbar in his hands, blood-stained and bewildered.

Chaos reigns as the world crumbles into a nightmare of undead horrors.

Amid the panic, a digital screen materializes, thrusting Korig into a twisted game of survival.

“Main Objective: Survive the Zombie Apocalypse for an hour.”

“Bonus quest: Kill 100 zombies.”

The countdown begins, and Korig must navigate the terror around him, battling both the flesh-hungry undead and the enigmatic rules of a malevolent system.

As time slips away, Korig's past and present collide, revealing secrets that could be the key to his survival.

Will he conquer the unholy countdown, or become another victim in this relentless System Mania?

……………………………………………………………

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Entering the mortal world for a hundred generations, do not compete for the youth of one life, but only for the day and night of a hundred generations.

Seeking immortals in the world of mortals.

My name is Li Qing. I have escaped from the mortal world in the third life, entered the Tao in the ninth life, and become immortal in the hundredth life.

(longevity stream, non-simulator, non-reincarnation rebirth)

(Bai Shi Shou Yuan, One Life Life)

- Description from novelbuddy

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.