One possible plot could be that Naruto is cursed by a powerful enemy. This curse transforms him into a wolf. As a wolf, he has to adapt to his new form. He might discover new abilities like enhanced speed and sense of smell. His friends initially don't recognize him and he has to find a way to communicate with them. Eventually, he goes on a journey to find a way to break the curse.
Well, perhaps in the 'naruto becomes a wolf bijuu fanfiction', Naruto is transformed into a wolf - like Bijuu form due to some dark magic or a strange experiment gone wrong. His friends initially don't recognize him, and he has to struggle to control this new form while also trying to show them it's still him. He may learn new jutsus that are unique to this wolf - bijuu form and use them to protect the village from new threats that are too powerful for his normal form.
Perhaps it's a jealous ninja from another village. This ninja has always been envious of Naruto's power. So when he gets the chance, he uses a dark magic to turn Naruto into a wolf. His goal is to make Naruto weak and lose his status among the ninja community.
Maybe there is an ancient wolf demon spirit that is corrupted and sees Naruto as a threat to its reign. This spirit would try to either kill Naruto or corrupt him further, causing chaos in the world.
One interesting plotline could be Naruto struggling to control his new wolf demon powers. He might accidentally lash out at his friends, creating a rift between them until he learns to master his abilities.
It could be Orochimaru. He's always interested in strange and powerful forms, and Naruto's new wolf - bijuu form would be something he'd want to study or even control for his own evil purposes.
There's no way to know exactly who the wolf goddess is without reading the 'naruto and the wolf goddess naruto fanfiction'. However, she could be a character that symbolizes the wild and untamed aspects of the Naruto world. She might have a connection to the spiritual side of the world, like the tailed beasts. And perhaps she has a unique role to play in Naruto's story, whether it's as a guide, a protector, or even a potential threat depending on how the story unfolds.
Naruto would most likely see the wolf as a new comrade. He has a strong sense of justice and would feel responsible for protecting the wolf. He would introduce the wolf to his friends like Sasuke and Sakura. They could all train together, with Naruto showing off his Rasengan and the wolf showing off its natural hunting skills. And Naruto would always be there to make sure the wolf is safe and happy in the ninja world.
One possibility could be that Naruto is drawn to boxing because of its physicality and the determination it requires. He might see it as a new way to test his strength and endurance outside of ninja battles. Maybe he starts training with a local boxing coach who sees his potential and helps him develop his skills.
Well, if Percy becomes a wolf in fanfiction, he would probably have to adapt to a whole new way of life. He'd be part of a wolf pack perhaps. This could lead to some interesting character development as he learns the pack's hierarchy and how to communicate in a more primal way. And his relationship with his friends might change too, as they might be a bit wary of his new wolfish form at first.