Naruto System in One Piece - Chapter 508: Prologue of the Gale

[Congratulations! You’ve unlocked the Dimensional Motel System.][First Mission: A runaway princess—hailed as the most beautiful in the land is being hunted by her step-mother. She was originally headed to the dwarves’ cottage, but the System has rerouted her to your motel instead.][Protect her. Win her trust. And if you manage to woe her, you’ll earn her Affection Points.][Bonus Mission: Sleep with her evil stepmother to unlock more reward]'What kind of weird mission is this? And why does this story sound way too familiar?'

“You dragged me into this world. Now you kneel in it.” — Tim SlokovBy day, Tim Slokov was a quiet office drone. By night, a ruthless online critic of fantasy novels. But when a mysterious force transmigrates him into the dying body of an elven outcast—doomed and powerless—Tim realizes he’s become the tragic background character of someone else’s story.Only he refuses to die quietly.Denied justice, Tim is granted a single gift: the Shattered Necromancy System, a broken power fueled by death itself.[Seek Me, O Death — Passive]: Every kill becomes a servant. Every soul feeds his army.[Death Embrace — Active]: He becomes what he commands—gaining the power of his dead.[Arise — Active]: The battlefield becomes his stage, where his fallen rise again.Armed with cursed power, Tim must evolve himself—and his ever-growing legion of the dead—to claw his way up a world that wants him erased. But vengeance is only the beginning. As his strength grows, so does the truth behind his forced arrival... and the god-like force that wants him broken.Tim isn’t here to play the hero.He’s here to rewrite fate—one death at a time.

However, he did not know that he was not raising just a harmless pet, but a biological weapon secretly made by the government… a real monster.

As a former librarian, Rand felt that he had been living an ordinary life, the one that he had reclaimed unconsciously every single day.

Recently, he has been a little upset because the pet fish he accidently brought home to raised seems to have undergo some strange changes

Well, it turned into a merman.

- Description from Novelupdates

True evil needs no reason to exist.

“All living creatures must die, but I wont. ”

Once known as the most talented and knowledgeable scholar/philosopher across three continents, he basked in the praise and reverence of those around him. However, tragedy struck one fateful night when he bore witness to the cold-blooded murder of his entire family. Driven to madness, he embarked upon the path of power, the path of negative energy, and thus, The Great Demon, Badur, was born.

In a single day, a mountain of corpses were stacked, many of which fell to his blade. However, during his final pursuit of revenge, he met his untimely demise. His soul was extracted and cast into the void, where it would endure eternal suffering.

However, his jouney would not end here……

“What do you desire?”

A grotesque creature floating in the void asked while staring at the bruised and beaten soul of a young man.

[Ding!! Host has received Void grade Treasure]

[Ding!! Goal has been set : Attain True immortality]

A new lease at life is presented

A deal with a Demon filled with resentment

A new journey, a new Dawn

With that the great Demon, Badur is reborn

ps: the book won't progress the way other novels have been progressing. if you don't like a unique development then maybe this isn't the book for you.