In fanfiction, if Naruto is half - bijuu, his appearance could change in several ways. His ears might be a bit pointed, like those of a fox if it was related to the Nine - Tails. There could be a faint glow around him, especially when he gets angry or uses his bijuu - related powers. His nails could be longer and stronger, like claws. And his gait or the way he moves might change, becoming more like the way the bijuu moves. He might even have a faint, beast - like growl in his voice at times, which would be a very distinct change in his appearance and the way he presents himself.
In fanfiction, if Naruto is half - bijuu, it could mean he has enhanced physical abilities. For example, he might have greater strength and speed like a full - bijuu. His chakra reserves could also be much larger, allowing him to perform more powerful jutsu for longer periods.
The power dynamics could be complex. Since Naruto is half - bijuu, he might have some powers that are a blend of human and bijuu abilities. The fem bijuu, being a full - fledged bijuu, would likely have more raw power initially. But Naruto could have the advantage of being able to think more like a human and strategize better.
One possible plotline could be Naruto struggling to come to terms with his half - bijuu nature while also dealing with his relationship with the fem bijuu. Maybe there are other characters who are either afraid or in awe of his unique state, leading to various conflicts.
If Naruto became a dragon bijuu in fanfiction, his relationship with his friends would face a big transformation. His friends would need to get used to his new appearance and powers. For instance, they might be scared at first when they see him as a dragon. But as time goes on, they would realize that Naruto is still the same person inside. However, his enemies would see him as a more dangerous target. And his relationship with the other bijuu could also change. He might be seen as an equal or even a leader among them, which would change the power dynamics in the bijuu world.
His power becomes extremely overwhelming. With all nine bijuu, Naruto gains access to an insane amount of chakra. He can perform massive jutsu without much strain. For example, his Rasengan could potentially be magnified to a scale that could destroy large areas with ease. Also, his physical abilities like strength and speed would be enhanced to superhuman levels due to the boost from the bijuu's power.
Well, it makes Naruto extremely powerful. He becomes like a force that no one can easily oppose. His chakra level skyrockets, and he can use the unique abilities of each bijuu. This changes the power balance as he can now handle threats that were previously too difficult, like taking on powerful villains single - handedly.
His life changes drastically. Firstly, his social status within the village would be very different. People might fear him initially. His relationships with friends like Sasuke and Sakura would also be affected. They would have to adapt to this new Naruto. His training regime would change completely as he has to learn to control his new bijuu form. He might have to isolate himself at times to avoid causing harm.
Naruto might be initially shocked. He has always seen the bijuu as powerful entities, not as potential mates. But being Naruto, he would likely approach the situation with his usual kindness and try to understand their feelings.
Naruto would likely be more confident. With the bijuu by his side from the start, he wouldn't have to face the same level of loneliness and self - doubt. His character might be more assertive and less impulsive as he'd have the wisdom of the bijuu to guide him.
In many Naruto fanfictions, if Naruto has three bijuu, they could be the Nine - Tails (Kurama) which he already has in the original series, perhaps the Eight - Tails (Gyuki) as it has a connection with Naruto's world and Akatsuki's hunt for the bijuu. And another could be the Three - Tails (Isobu). However, it really depends on the specific plot and creative direction of the fanfiction.