Naruto System in One Piece - Chapter 6: Massacre and Counterattack

An ordinary young man on earth, Xia Feng, traveled to a world of sword and magic, and took the body of Lucien Evans, another ordinary young man.

Ryan «Quicksave» Romano is an eccentric adventurer with a strange power: he can create a save-point in time and redo his life whenever he dies. Arriving in New Rome, the glitzy capital of sin of a rebuilding Europe, he finds the city torn between mega-corporations, sponsored heroes, superpowered criminals, and true monsters. It’s a time of chaos, where potions can grant the power to rule the world and dangers lurk everywhere.

She is a descendant of an Ancient Chinese Aristocratic family. Having just transmigrated into a young lady’s body filled with aphrodisiacs, she had no choice but to pounce at a random man upon arrival.

Unexpectedly, not only did she get caught red handed, she’s also pregnant with child before marriage.

In the end, the baby she carried for ten months turned out to be a little fox, and it could cry “Mama” once born? Fortunately for her, the child is well-behaved, kind, and caringly protective of his mother.

In this world filled with both evil and good, this pair of mother and son will work together to destroy all their adversaries. As for the scumbag relatives who scorned them, they will make them pay dearly with regret in mind.

But then one day, baby fox’s father suddenly showed up, not only to steal the child, but to steal her too? How can there be such a good thing? This foolish father of his, didn’t even ask for little fox’s opinion?

Stabbing his hands to his hip, a certain little fox demands: “You want to be my father? First pay up then go behind the line. Mother, I think next door’s Uncle Wang is quite rich, you can just become Uncle Wang’s daughter-in-law.”

- Description from novelupdates

[Pre-Author's Note: MC develops as time passes, it starts out slow but surely]“The Apocalypse isn't just fit for anyone... Without Strength, you're just a tool waiting to be exploited, So hurry the fuck up and get some strength already,”The world ended in an instant.One moment, Simon, a 20-year-old game designer, was sitting at his desk, immersed in code.The next, the sky cracked open and monsters poured into the streets.Werewolves with claws sharp enough to slice through steel.Undead skeletons that marched with deadly purpose and Zombies that infected humans with the power of their bite.The gods had unleashed an apocalypse, and humanity was no longer at the top of the food chain.Simon ran, he survived... and then he was granted a power.|Congratulations You have been binded to the Vampire Overlord System|He was something else.A vampire overlord.Yet the Apocalpyse had only just begun...