I'm a villain within the hero's party - Chapter 11 - 1 Part 10.5: South’s Finest Assassin

Once upon a time, a boy was referred to as a “War Hero.”

In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.

As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.

However, what awaited him was the Aletia of 1000 years in the future.

As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.

Marked by the cursed Darksign, Naruto Uzumaki finds himself tethered to two worlds: the unforgiving lands of Dark Souls and the shinobi realm of ninja. How will a world of Dark souls face a Chosen Undead with chakra? And how will the shinobi world confront a warrior reborn in the Lands of Lordran?

A chilling air swept across the desert as a figure in a black cloak and obsidian crown walked toward the advancing army of House Elyria.With a raise of his hand, the sun turned black, plunging the battlefield into darkness. The wind ripped away the sand, revealing an ocean of skulls, and from it, thousands of undead surged, surrounding the army.Blood spilled, and with each death, the army grew—undead rising even before their bodies hit the ground. The figure stepped onto the shoulder of a massive giant, its molten eyes burning as it crushed entire squads with a single swing.As the black sun set, only the general remained. Kneeling, he glared.“You think this will go unanswered? House Elyria is one of the strongest forces on the continent!”The figure smirked. “Your House will answer soon enough. I’ll be visiting it tonight.”With a wave, the undead surged, swallowing him whole.--After his death in an accident, Roye awakens in the midst of a dark sacrificial ritual, surrounded by hundreds of lifeless corpses inside the body of Roye Valdrin—a disowned noble, the forgotten younger brother of a ruthless villainess, and the discarded ex-fiancé of a destined heroine.Worse yet, he has transmigrated into the world of Valoria, a dark fantasy realm where humanity began reclaiming its place on the surface only eight hundred years ago, after living underground for millennia with no idea why they were forced to hide in the first place.A world where gods and ancient emperors still influence the living from their graves.A world where politics run amok.A world where evil hearts and questionable morality lurk beneath a beautiful facade.Could he even survive in such a brutal world?Core Bloodline Acquired—Special Inheritance Gained: Apostle of Death.(Rank- Unknown)Roye doesn’t know if he will survive, but he knows one thing: he’ll do whatever it takes. Messing with the plot, killing main characters—nothing is off-limits.If the world wants to destroy him, he’ll burn it down first.

In a world fraught with innumerable dangers where living day by day is a struggle, a young man from the modern age transmigrated into such a world, accompanied by a peculiar system made for assassination.