Sure. In fanfiction, the rules can be bent or rewritten. Maybe Naruto discovers a hidden bloodline connection that enables him to use Wood Style. It could be that he has a distant relation to the Senju clan that was previously unknown. This new ability would change the dynamics in battles and his relationships with other characters like Sasuke and Sakura, as he would have a whole new set of skills to bring to the table.
One way could be through a special training with a character who already has Wood Style or knowledge of it. For instance, if Yamato decided to train Naruto intensively in Wood Style techniques.
One possibility could be that Naruto discovers a hidden ability within himself to use Wood - Style Treant Jutsu. Maybe he unlocks it during a life - threatening battle where he needs to protect his friends. He could combine his own chakra with some ancient energy source in the forest to create these powerful treant - like creatures that fight on his side.
One idea could be a character from Fairy Tail who somehow gains the ability to use Naruto's Wood Style. For example, Natsu could discover a magical item during one of his adventures that gives him this power. He might initially struggle to control it as it's a completely different type of magic/ability compared to his Fire Dragon Slayer magic. But as he practices, he could start using it in unique ways, like creating wooden constructs to fight enemies or using the wood to trap opponents in a forest - like environment.
Perhaps an OC who was raised by a group of forest spirits. The spirits taught the OC how to use Wood Style as a means of protecting the forest. This OC would have a very different view of the world compared to normal ninjas. Their Wood Style would be more in tune with the natural balance, and they might be hesitant to use it for violent purposes, only doing so when the forest or its inhabitants are in great danger.
The Wood Style OC could be a rival to Naruto. Since Naruto has the power of the Nine - Tails, the OC with Wood Style could see Naruto as a threat to their own status as a powerful ninja. This would lead to intense battles and a begrudging respect as they learn more about each other's abilities and motives.
Yes, there are. The Naruto fanfiction community is vast and creative. Some writers like to explore the idea of Naruto having Wood Style, often by creating unique storylines that might involve him learning it in a different way than the original series, perhaps through some new form of training or a special encounter.
The fanfic could start with Naruto having a strange dream about using Wood - Style Treant Jutsu. He wakes up curious and starts to experiment. He finds that he can transfer his own emotions into the treants, making them more aggressive or defensive depending on how he feels. As he gets better at it, he uses the jutsu in a major battle against a group of rogue ninjas who are terrorizing a village. His treants become a symbol of hope for the villagers as they fight off the invaders.
One possible fanfic could be where Naruto discovers he has Wood Release through some ancient hidden jutsu. He might struggle at first to control it, like how he did with the Nine - Tails' chakra. Maybe he gets some help from Yamato who also has Wood Release experience.
One possibility in fanfiction is that Naruto gets some sort of power - up or transformation that allows him to use Wood Style. It could be related to the power of the Nine - Tails. Since the Nine - Tails has such a vast amount of chakra, it might interact with Naruto's own chakra in a way that enables him to perform Wood Style jutsu. Or perhaps he inherits some DNA from Hashirama Senju in a very far - fetched but interesting fanfic scenario.