On a deeper level, the baby fox could be a source of emotional support for Naruto. Naruto has had a tough life growing up, and the baby fox's unconditional love could heal some of his emotional wounds. It could also inspire Naruto to be a better person and a stronger ninja, as he now has something precious to protect.
It could make Naruto more responsible. Since he has to take care of the baby fox, he'll have to think about another being's needs. For example, he can't just go on long missions without making arrangements for the fox.
The baby fox might also change Naruto's social life. His friends would be curious about the fox and might visit more often to play with it. And Naruto would have to introduce the fox to new people and places in Konoha. This could lead to new friendships or even some comical situations. For instance, if Shikamaru comes over and the baby fox steals his snacks.
Sakura might be a bit cautious at first. She'd worry about the fox being a danger or a distraction. But after seeing how Naruto cares for it, she'd warm up and might even help Naruto take care of it, like making sure it has proper food. Sasuke would probably be indifferent at first, but if the fox showed some useful skills in battle, he'd start to respect it. Shikamaru would just sigh and say it's too troublesome, but still offer some strategic advice on how to keep the fox hidden from enemies if needed.
One possible scenario in this fanfic could be that Naruto discovers the baby fox while on one of his adventures in the forest. The baby fox might be injured or lost, and Naruto's kind heart leads him to take care of it. Their snuggles could represent the bond of trust and friendship that forms between them. It could also be a symbol of Naruto's connection to the natural world in the Naruto universe.
Maybe Naruto finds the baby fox while he's exploring an unknown area. The fox is injured, and Naruto uses his medical ninjutsu to heal it. The fox then becomes attached to Naruto. As the story progresses, the fox helps Naruto in battles by using its speed and small size to its advantage, like sneaking up on enemies and stealing their weapons or intel.
Well, one possible plot could be that the baby fox has some special powers. Maybe it can communicate with Naruto telepathically and helps him in his ninja missions. For example, it could sense danger before Naruto does and warn him.
Well, one interesting plot could be Naruto having to rely on his friends in a whole new way as a baby fox. Since he can't communicate as he used to, his friends have to figure out his needs through his actions. Another plot might be that Naruto discovers new abilities or powers in his baby fox form that he didn't know he had before.
Perhaps the baby fox has some special abilities. When it snuggles with Naruto, it could transfer some of its power to him, like a boost in his chakra or an enhanced sense of smell. This could then be used in his battles or in his search for new ninja techniques.
Obviously Naruto himself is the main character as he is the one who turns into a baby fox. His friends like Sasuke and Sakura would also be involved. Sasuke might be initially confused but then determined to help Naruto. Sakura would probably be more nurturing and try to take care of the baby fox Naruto. Kakashi Sensei could also play an important role, using his wisdom to figure out what happened to Naruto and how to reverse it.
In fanfiction, the fox contract can make Naruto more confident. Since he has this special connection with the fox, he might feel like he has an edge over his opponents. This new - found confidence could show in his battles and how he interacts with others.
The fox kit could make Naruto feel more responsible. He has to take care of it, so he grows up a bit faster in terms of maturity. He'll have something else to think about other than just training and becoming Hokage.
Socially, his interactions change. Some people in the Naruto world might be more accepting of his new form, while others could be more hostile. He may find himself having to prove his worth in a different way, not just as a ninja, but as a being that is part fox. This could lead to new storylines about acceptance and discrimination within the fanfiction.