Chopper is very much alive in the One Piece manga. The creators haven't written his death into the story. He's an integral part of the crew and their journey continues without that tragic event.
One Piece Odyssey is indeed an original story. It builds on the familiar setting and characters but offers a distinct plot that sets it apart from the main manga or anime arcs.
The fanfiction can also add a new dimension to the characters. Chopper's relationship with lemons can show different aspects of his personality. If he's really into studying the lemons, it can highlight his scientific curiosity. And it can create new dynamics within the Straw Hat crew as they interact with Chopper's lemon - related adventures.
In the 'One Piece Odyssey Novel', the central characters are surely the members of the Straw Hat crew. Luffy, the fearless captain with his rubber powers, is bound to be leading the way. Zoro, the skilled swordsman, will be there to fight tough battles. Nami, the navigator, will be guiding their ship. Usopp, the sharpshooter, Sanji, the cook, Chopper, the cute doctor reindeer, Robin, the archaeologist, Franky, the cyborg shipwright, Brook, the skeleton musician, and Jimbei, the fish - man will all play important roles in their adventures.
I'm not entirely sure as I haven't read it fully yet, but generally in the One Piece world, it's likely to be about the Straw Hat crew's adventures, their battles, and their search for the One Piece.
One interesting fanfiction could be about Chopper's further adventures in a new, uncharted island where he discovers a unique type of medicinal plant that has strange effects on the Straw Hat crew. Another might be a story where Chopper has to take on the role of the ship's doctor in a really difficult situation when all the other crew members are incapacitated. There could also be a fanfic that focuses on Chopper's past, delving deeper into his time before he joined the Straw Hats and how he coped with being alone as a reindeer in a human - dominated world.
One interesting storyline could be Chopper discovers a new type of medicine on an island and Robin helps him research it. Their different skills, Chopper's medical knowledge and Robin's ability to read Poneglyphs, combine to unlock the secrets of this new medicine which could potentially save many lives in the One Piece world.
Well, one interesting storyline could be Chopper getting involved in a zany adventure on a new island where he discovers a unique type of lemon that has magical healing properties. He then has to protect this lemon from pirates who want to use it for evil purposes.
Well, One Piece Odyssey's story is an epic one. The Straw Hat Pirates are suddenly separated on this unknown island. As they try to reunite, they explore different parts of the island. Each area has its own set of problems. Some parts are filled with dangerous creatures, while others have tricky traps. The crew has to rely on their wits, their powers, and most importantly, their friendship to overcome all these obstacles and find a way to leave the island.
In One Piece Odyssey's full story, first, the Straw Hat crew ends up on the island which is a major plot point. Then, as they explore, they discover there are strange powers at work on the island. This leads to them trying to figure out how these powers relate to their own abilities. And of course, their efforts to come back together as a crew are crucial throughout the story. They also have to deal with antagonists who don't want them to succeed in leaving the island or uncovering its secrets.