Naruto System in One Piece - Chapter 91

Cheng Yan transmigrated only to end up in a medieval Europe like world, becoming Roland, a Royal Prince. But this world doesn’t seem to be the same as his former world, despite some similarities. Witches are real and they actually can use magic?

Follow Roland’s battle for the throne against his siblings. Will he be able to win, even though the king already declared him to be a hopeless case and with the worst starting situation? With his knowledge of modern technologies and the help of the witches, who are known as devils’ servants and are hunted by the the Holy Church, he might have a fighting chance.

Now, let his journey begin.

Time had run out. Azrael hadn't been chosen by the system, leaving him Forsaken with no hope for a prosperous life.But he wasn’t going to let it end like this. Even if it meant trading his life for a single chance, he would take it. It was either a life of greatness, one where he would reach the very top… or a short one, dying here, unmourned and forgotten by a cursed world that never cared he existed.“An early end in pursuit of greatness sounds better than a slightly longer one filled with stagnation and regret.”In the end, all the things he had done hadn’t been for naught. The sacrifices up until now had been worth it.[Inborn Trait activated][System devoured][Inborn Trait is fusing with the system][Devouring System has been granted]To his surprise, however, his system proved to be far more extraordinary than the others, granting him a unique path that only he could follow.With that realization, one thing became certain: no matter what monster or human stood in his way, he would reach the very top of the hierarchy, regardless of the cost.

A magical ‘universal toolbox’ that allowed Joga to step into the arms industry.

The strangeness of the world made Joga gradually change his goals…

“Sir, how did you get to this point?”

“I don’t know. At first, I just wanted to make some money, buy a house, and marry a wife. But slowly, as more and more people appeared around me, my goals began to change. ”

“Then what is your goal now?”

“Now I just want to retire in peace with my guys, really!”

- Description from novelbuddy

Rex was an ordinary salaryman, resigned to a dull life of monotony in a towering megacity. But his world shatters when he’s conscripted by Nexum Dynamics, a ruthless megacorporation, and thrust into a brutal war for a barren, alien world. The planet holds unimaginable riches, but it’s also swarming with the Krhyssari, an insectoid race that dominates the surface with their hive-mind precision and relentless aggression. Amid the carnage, Rex had an extraordinary encounter with Cleo, an ancient AI, a survivor of a long-extinct civilization. Cleo isn’t just an artificial intelligence; she’s a consciousness imbued with memories of her people’s interstellar empire and equipped with advanced bio-nanotechnology. Offering Rex a new purpose and unmatched power, she transforms his fragile human body into a hybrid of living metal and flesh, making him the ultimate weapon. But Cleo is more than a tool of war. As she journeys alongside Rex, her cold, logical algorithms evolve, shaped by his humanity. Together, they form a bond that transcends the boundaries of man and machine, discovering love in the midst of chaos. As Rex and Cleo fight for survival, they uncover a shared ambition, to rise as intergalactic overlords, uniting or conquering the galaxy.