Well, one possibility could be that Naruto's symbiote gives him enhanced physical abilities. For example, it could increase his speed and strength even more than his normal ninja skills already do. Maybe the symbiote also has some special powers of its own, like the ability to sense danger from a far greater distance. This could add an interesting twist to Naruto's adventures as he would have to learn to control this new power source while still relying on his ninja training and the power of the Nine - Tails.
Naruto's character would likely become more complex. With the symbiote, he might start to question his own identity. Is he still just Naruto Uzumaki, or is he now something more? He could become more cautious as he has to deal with the new power and the potential risks it brings. For example, if the symbiote has a negative influence on his emotions, he would have to learn to control that.
The symbiote could make Naruto's relationships more complicated. For her friends, they might be initially scared or distrustful of the new - looking Naruto with the symbiote. For example, Sasuke might see her as a threat now. But as they learn that the symbiote is actually helping Naruto control the Kyuubi, they might slowly accept it.
The Venom symbiote would transform Naruto's abilities in a big way. Physically, he'd be on a whole new level. His strength would be enhanced to the point where he could easily break through solid objects. His speed would be like a blur, allowing him to quickly close the distance between him and his enemies. The symbiote might also affect his chakra control. Maybe it could help him store more chakra or use it more efficiently. Additionally, Naruto could gain the symbiote's ability to sense danger, which would be extremely useful in his dangerous ninja life. It would make him more aware of incoming attacks and able to react more quickly.
The symbiote could make Naruto's ninja way more about adaptation. Since the symbiote brings new physical abilities, Naruto might need to adapt his fighting style. His ninja way of never giving up could be enhanced as he now has to overcome not only his normal challenges but also the challenges of controlling the symbiote. For example, if the symbiote has a weakness to certain elements, Naruto would have to find ways to work around that while still staying true to his beliefs.
One popular 'Naruto has a symbiote' fanfiction could be 'Naruto: Symbiotic Shinobi'. In this type of fanfiction, Naruto might gain unique powers from the symbiote. It could enhance his already formidable strength and give him new abilities like better stealth or the ability to sense danger more acutely.
The symbiote can change Naruto's physical appearance. For example, it might give him a more menacing look with some black markings similar to traditional symbiote looks in other stories. This can also affect how others perceive him, making some fear or be more cautious around him.
Initially, the relationship could be rocky. Naruto, being used to his own way of life, might find it difficult to adjust to the presence of the fem symbiote. However, as the symbiote reveals its powers and shows that it can help Naruto in his struggle against neglect, they begin to form a connection. The symbiote may start to feel empathy for Naruto's situation, and Naruto may come to see the symbiote as a partner. As they face more and more difficulties together, such as fighting against those who still look down on Naruto, their relationship evolves into a deep and unbreakable bond of mutual understanding and support.
Hinata might interact with symbiote - Naruto with a mix of caution and curiosity. Since Naruto is different with the symbiote, she would be careful at first. But her love for Naruto would also make her curious to understand what the symbiote does to him.
His appearance would change quite a bit. The Venom symbiote would likely cover parts of his body, like his arms and torso, in a shiny black substance. His face might have some of the symbiote's features, such as a wider, toothier grin. His hair could also be affected, perhaps having black streaks running through it. Overall, he'd look a lot more intimidating than his normal self.