One possibility is that the OC son could be on a journey to discover his father's past. He might face many challenges as he tries to live up to the legacy of the Roger Crew. For example, he could encounter enemies who were once foes of the Roger Crew and they target him because of his relation. Maybe he also has some special abilities or knowledge passed down from his father which he uses to fight and survive in the dangerous One Piece world.
The OC son might be a character who is torn between different loyalties. On one hand, he wants to uphold the values of the Roger Crew his father was part of. On the other hand, he has his own dreams and desires. He could be trying to find the One Piece not just for himself but also to complete what his father started. He may have a group of friends or comrades that he travels with, each with their own motives and backstories.
He might fit in by being a catalyst for change. Since he is related to the Roger Crew, he could inspire others in the One Piece world. His story could involve him trying to bring about a new era of peace or understanding. He could start by forming his own crew or joining an existing one. Along the way, he would face challenges like any other pirate in One Piece, such as dealing with the Marines, powerful pirates, and the mysteries of the sea. His relationship with the Roger Crew heritage would give his character a unique depth and significance in the fanfiction.
It might not be exactly what you want, but I'll try my best to recommend a novel that's most relevant to your description." One Piece: The Rabbit on the White Beard Ship " is a light novel by the author, Chi Youxuan. The general plot of this novel is as follows: "Are you the legendary newcomer, Eagle Eye Mihawk?" "I'm sorry, I don't have a knife smaller than this." One day, the rookie Mihawk met a rabbit when he was out at sea. Rabbit took out a small knife and let him live the most unforgettable day of his life. ---------------------------- One Piece's Supreme was a light novel by the author, Ice Crush Kitten. The general plot of the novel was: Milo, who had transmigrated to One Piece's world, realized that he could cultivate the telekinesis of a full-time hunter. " This fruit's ability is not bad. I like it very much." " How do I get it?" Milo knocked on the materialized black book," One Piece's Supreme." …。 ---------------------------- One Piece: All the Villains was a light novel by the author, Little Hymie. The general plot of the novel was: McCann, who had transmigrated to the world of One Piece, obtained the Golden Finger Pirate Ship that summoned the villains of all worlds, the Black Pearl; the vice-captain and voyager, Héctor Barbosa; the ship's cook, Hannibal Lecter; his personal assistant, Harry Quinn; and the boatman, Jigsaw. Moriarty, the archaeologist; Nanase, the shark king, the boatswain; Jason, the captain's guard; Fran, the crazy doctor on the ship; In short, it was a party for the villains. ---------------------------- One Piece's Domineering Power was a light novel by the author, Nian Niansheng. The general plot of the novel was: Smoggy: I've rarely taken anyone's word in my life, Vic's one. Karp: I don't regret bringing Vic to the Navy. Vic left the Navy. The Navy let him down. He didn't do anything wrong. Zefa: " I'm not exaggerating. Vic is the most talented young man I've ever seen. It's a pity, Mihawk: I don't know how Vic cultivated. He's younger than me, and his sword cultivation isn't weaker than mine. He also has such a powerful Demon Fruit ability. I'm not as good as him." Kaido: Only dominance can rule over everything. This is the truth that Vic taught me. Red hair: Vic's color has already surpassed his blue. "Vic, I'm back from Lafdrue, I know the truth…Vic, the war is about to begin…" ---------------------------- " A Monster's Journey Begins with One Piece " was a light novel by the author, Follower 1. The general plot of the novel was: After being reborn in the world of pirates, Mino appeared in the waters of the New World's Aunty Pirates. Fortunately, Mino did not need to hand over his soul. As for the reason, it was because he had transmigrated to a rare race, and he had three eyes on his head! Looking at the strange eyes in the mirror, Mi Nuo sighed. Rather than becoming an endangered race, she might as well become a new race. I want to be a monster and not a human anymore! He had just released a new book, and it was called 'Bergerpunk Forges Ninja Technology.' ---------------------------- " Legend of the Murloc Pirates " was a light novel written by the author, Diesel-Powered Chicken. The general plot of the novel was: Fifty thousand meters deep in the dark and oppressive Dead Sea, a pair of vertical pupils slowly opened again. He was once the most powerful Sea Arowana in history, and the world government was terrified of him. He used to be the vice-captain of the Locks Pirates, which the navy feared. He was once the most terrifying executioner in the eyes of pirates and evil forces. He had once single-handedly made the weak Fishmen Island a world power. In the long years, this sea without memories had long forgotten him. He was the former king of Fishmen Island, Moang Seale! When the soul from Earth awakened this powerful corpse. How would he write another legend on this sea? ---------------------------- One Piece: Captain Locks is a light novel by author Gu Yi. The general plot of this novel is: This book was also known as One Piece's Fruit of Manipulation, One Piece's Crew Fruit System, and One Piece's Chaotic Era. It recorded the history of that period." Before the era of chaos, no one had ever thought that a pirate group could actually overthrow the government. No one in the entire world had ever thought that the Devil's Fruit was no longer the only one in that era." ---------------------------- " The Descent of One Piece's Demon God " was a light novel by the author, River Shore. The general plot of this novel was: The protagonist woke up to find that he had become Meliodas and had transmigrated to the world of One Piece. The person sitting opposite him was actually Eam, the most mysterious existence of One Piece. The protagonist was confused… ---------------------------- " The Great Pirate Krokdal " was a light novel written by the author, the leader of the rice worms. The general plot of this novel was: 1. This is a Doujinshi novel about One Piece Sand Crocodile. 2. It was written very early. If the plot can't keep up, don't comment. 3. Single world, no comics, with the nature of one's imagination. Finished. 4. The new book," Defiant God's Space," was officially released. 5. Official group number: 257938047. ---------------------------- One Piece: Crick Wants to Be the Strongest in the World was a light novel by author Don't Call Me Jing Jing. The general plot of this novel was: "Captain! Look! There's a fool from the west. He's sitting in a coffin and rowing a boat with a knife!" "Really? Where is it?" " Hahahahaha…" Looking in the direction pointed by the lookout, the crew on the Dreadnaught Battleship Saber burst into laughter. Klick, who had transmigrated to One Piece's world not long ago, came back to his senses and looked at the person whom everyone was laughing at. Black short hair, eagle-like sharp yellow eyes…Wearing a black trench coat, white trousers, and a black top hat…The iconic pitch-black cross-shaped longsword was inserted into the sea with half of its body. It looked in his direction expressionlessly. Eagle Eye! Krick broke out in cold sweat. What should he do? Anxious! Waiting online! How could he pretend that he didn't see Hawkeye rowing the boat with the black blade? At this moment, the Killing Intent System had successfully upgraded! Crick won three chances to draw the lottery!
" I'm the Tenth Crew Member of One Piece " was a novel about the protagonist Luffy, who was brought to a mysterious world by the waves and became a tenth crew member during a shipwreck. In this world, Luffy met many new companions and embarked on a journey full of adventures and challenges. In this world, Luffy and his companions experienced many dangers and difficulties, but they always firmly believed in their dreams and kept moving forward.
I think Nami would be a very interesting character in this fanfiction. She's smart and resourceful. In a time - travel scenario, she could use her knowledge of navigation and her wits to figure out how to get the crew back to their own time. Also, she might be able to take advantage of the economic situations in different time periods to amass wealth for the crew in ways she couldn't in the original story.
"The Strongest Fisherman" was an urban supernatural novel. It was about a fisherman who lived in seclusion in the mountains. He was a professional mage, an all-rounded jungler, and had mysterious supernatural abilities. After the main character joined the Grass Hat Pirates, he became the first crew member and was responsible for providing food for the crew. I think this book fits the plot described in the question. It's very worth reading ~ I hope you like this fairy's recommendation. Muah ~😗
In a fanfiction where Luffy meets Roger, it could be an amazing encounter. Roger might see in Luffy the same spirit of adventure and freedom that he had. He could pass on some hidden knowledge about the One Piece or give Luffy a cryptic hint about the true nature of the Grand Line. This meeting could also inspire Luffy even more, fueling his determination to become the Pirate King. It would be a moment full of emotion and significance for both characters and for the entire One Piece universe.
One possible thing that could happen is that Roger would tell Luffy about the real origin of the Devil Fruits. Given that Roger had explored so much of the world, he might know secrets about these strange fruits that no one else does. This knowledge could give Luffy an edge in his battles and his journey. Another aspect could be that Roger shares his experiences with the ancient weapons. Luffy might then be more aware of the power and danger they pose, which could be crucial in his future adventures.
It could have been a jealous rival who wanted to take down Roger Rabbit. Maybe this rival had a grudge or was envious of his success.
Another possibility is Zoro. He is constantly striving to become the greatest swordsman. His battles and growth could be counted as these 1000 victories. He might defeat 1000 strong sword - wielding opponents or overcome 1000 different training challenges on his path to mastery, all while being part of the Straw Hat crew's adventures in the One Piece world.
Luffy could be an interesting main character in a vampire - themed One Piece fanfiction. Imagine if he was turned into a vampire but still had his rubber powers. He would have to deal with his new vampiric nature while leading his crew.