One Piece Crossover

Henry was a normal teenager. He lived with his mother and his sister, and his life was like that of any other teenager his age. Until one day, a conspiracy theory that the end of the world is approaching becomes reality, Henry realizes that he is one of the lucky ones to have been chosen to possess those inhuman abilities that will allow him to survive in the midst of the apocalypse and be the jackpot winner.

After a thousand years, the beast of the earth will you come to destroy the world and only a lightning witch will be able to stop him, lina just discovered that she is the one destined to send the beast back to sleep, but what happens when Lina gets mated to the same enemy she's meant to kill? And figures out that she is the only one capable of stopping a great war between vampires and werewolves.

Allain - the legendary warrior of the Gold Kingdom - enters Teres in search of the only one who can bring him peace. But he's not the first; others have begun their residence. As the domination of their kingdom spreads, threatening to engulf all of humanity, Allain finds himself standing between his own kind and the one he loves and must accept the life he abandoned in order to secure his freedom for her.

Adrian was always treated like thrash by his wife's family. in order to pay for his mother’s surgery and save her life, Adrian went to prison for a crime his brother-in-law committed. However, he was backstabbed and his mother was left to die. Adrian was sentenced to 7 years in prison. When he returns, he vows to destroy those who looked down on him, one by one!

What is FEAR to that whose only dream is to die while standing? That is the only dream of a boy who was born in the slums and had to fight his way out just to find himself still at the bottom of the food chain. Arkan, a boy obsessed with the ability to shoot lasers was this person. A dying god had summoned him and in turn of reincarnating him into another world, he would avenge him by hurting and killing all of the other god’s chosen ones who had reincarnated in that world long before him, for he was the perfect person who could do so. A person who could not and does not wish to use mana and possesses a power only fantasied on earth and one that no one had ever been able to produce using magic in that world, the power to produce laser. So starts the journey of Arkan. A journey that no one else could walk and live in order to fulfill his promise, he would have to hunt and face powerful people who not only possessed something powerful on their side, as they could choose to either have a System or an A.I to assist in their journey while he would only have to rely on his intuition. Not only that, but he would have to fight the powers of that world both in the shadows and in the light as many kingdoms fall while the powerful fight and ancient beings start to show themselves again. To make matters worse, by being summoned the way he had been, a divinity that no one would ever want to have was left in his soul, for the one who he has to avenge is the god of misfortune, OIZYS.

Every Divine Contract comes with a debt. When it can no longer be paid, angelic Collectors descend, claim the contractor's soul, and leave behind nothing but a mindless Default. Fifteen years ago, Aeron Cross watched his parents get Collected. Since then he has lived for one purpose: to grow strong enough to kill what should never be able to die. He never gets the chance. A breach the Accord should have stopped tears through Sector 9, and Aeron becomes one more soul dragged out of a fleeing crowd. On another world, in the same second, Kai Osei, the greatest chess mind alive, collapses at the board moments after winning the World Championship. His whole life was spent finding the one weakness his opponents never saw until it was too late. Something reaches across the dark and moves a piece. The two deaths collide, and it isn't Aeron who opens his eyes. Kai doesn't know this world's rules. He doesn't need to. He can see them: every Contract is a position, every debt a price someone agreed to without checking the math, every god's certainty the one assumption nobody ever tested. But the body he wears still burns for a revenge that isn't his. Kai wants only one thing: to get home to his sister. Whatever dragged him here wants something else entirely. He stops asking how to survive this world. He starts asking who taught the gods they'd never have to lose.

Talent was not something many people possessed, yet it was something many begged the heavens for. Desmond was not one of those people. When his family abandoned him and he turned towards another empire, his uselessness would cause the Goddess's light to shine upon him. He would be the one whom the Academy, noble families, and empires would watch with curiosity and excitement. Desmond Moon, the Alchemist of the Goddess.

Seven years ago, Lieutenant Damien Ross lost everything: his freedom, his fortune, and the woman he loved. Now he's back with a hidden identity as a Bodyguard, a powerful empire behind him, and one promise: everyone who betrayed him will pay. But as old enemies rise and deadly secrets come to light, one question remains: Who framed him?

Xie Yan was nobody — an outer disciple with no talent, no standing, and no one to protect him. When his own sect brother orchestrated a massacre that killed sixty-three of their own and needed someone to blame, they tortured him for three days, buried him alive in the sect's forbidden valley, and walked away without looking back. They should have made sure he stayed dead. In his final breath, Xie Yan binds to the Grief Ledger — a System that doesn't reward strength or virtue, but despair. Every enemy he breaks, every spirit he shatters, becomes currency: Grief, spent on techniques, power, and an ascension no one thought possible for a boy left for dead in an unmarked grave. He claws his way back into a world that buried him, gathering allies along the way — a wandering cultivator carrying her own scars from a System just like his, and an old mentor who fights to keep him human even as the Ledger whispers that mercy is inefficient. But the man who buried him is hunting him to protect a secret far larger than one massacre, and he's bound to a System of his own — one with no interest in keeping him human at all. When his enemy kidnaps the one person Xie Yan has left to lose, the countdown begins. Ten days to become strong enough to save her. Ten days to decide exactly how much of himself he's willing to spend to do it. This is not a story about becoming a hero. This is the price of becoming an emperor.

Leo lived an ordinary life in the modern world, buried in work and exhaustion, finding escape only in a fantasy novel he loved more than reality itself. But one day, everything changes—he is suddenly pulled into that very world. When he opens his eyes, he is no longer a reader. He is a character inside the story. Not a hero. Not a villain. But a side character fated to die early. Just when despair sets in, he awakens a mysterious system—one that grants him growth through survival, struggle, and combat. Now Leo must navigate a world he thought he understood, where every decision could bring him closer to strength… or death. Armed with knowledge of the story and a system that defies fate, he faces one truth: Die as written… or break the story itself.