Well, different fanfictions have different takes on the levels of Naruto's chakra - enhanced strength. At the lower level, it might just be a slight boost, like being able to jump a bit higher or run a bit faster. As he progresses in the fan - made story, the levels increase. Middle levels could involve being able to take on stronger opponents single - handedly. At the topmost level, his strength could be so extreme that it defies the laws of the Naruto universe as we know it. This allows for really creative and out - there storylines in fanfiction.
In some fanfictions, there are basic levels where Naruto can enhance his normal strength just a bit for simple tasks like lifting heavy objects. Then there are intermediate levels where he can fight on par with mid - level villains. And at the highest level, his chakra - enhanced strength is god - like, able to reshape the world around him.
In some fanfictions, Naruto's chakra - enhanced strength is shown as being able to shatter mountains. His punches, powered by chakra, can create shockwaves that level entire landscapes. This is often an exaggeration compared to the original series, but it makes for exciting reading.
One way is through training with unique and powerful entities. For example, he might train with a long - lost sage who teaches him how to tap into deeper levels of his chakra. Another way is by inheriting new powers that boost his chakra. This could be from an ancient bloodline that gets awakened in the fanfiction.
In fanfiction, Naruto's yellow chakra may be more potent. His normal chakra is his basic energy, but the yellow chakra could be a special form. It might be stronger, allowing him to perform more powerful jutsus or move at greater speeds.
One theory could be that Naruto has a hidden bloodline trait related to chakra regeneration that is only explored in fanfiction. Maybe it was dormant before and gets activated through some extreme situation in the story.
His Rasengan would be stronger and more easily spammable. He could also use the Sage Mode more freely as he doesn't need to worry about chakra exhaustion. Maybe he could even combine different jutsus more often due to having an unlimited supply of chakra.
In Naruto fanfiction, power levels can vary greatly. Some fanfictions might boost the power of a character like Naruto himself, making his already strong Rasengan even more powerful, perhaps with new elements added. Others might focus on secondary characters and give them powers on par with the main characters. For example, a fanfiction could make Rock Lee able to use some form of ninjutsu on top of his taijutsu skills, which would significantly increase his power level in that fictional story.
One possible reason could be that Naruto has access to some new and powerful jutsu. Maybe he discovers a secret family technique or is taught by a very powerful sage. This new knowledge gives him an edge over Kakashi.
There are also fanfictions where Naruto absorbs the chakra of ancient sages. This chakra is filled with wisdom and power, allowing Naruto to gain new insights into ninjutsu and also boost his overall strength.
One role is to enhance Naruto's combat abilities. It can give him an edge in battles, like allowing for more unpredictable attacks. For example, it could make his shadow clones more versatile.
The golden chakra chains in fanfiction are often seen as more powerful. Regular chakra chains are already a formidable ability, but the golden ones might have enhanced strength, allowing Naruto to break through stronger defenses or hold more powerful foes. They could also have different properties, like being able to disrupt an opponent's chakra flow more effectively.