Well, in some fanfictions, Naruto might obtain all kekkei genkai through some sort of ancient and powerful jutsu. Maybe he discovers a hidden scroll or meets a mysterious sage who imparts this power to him.
In fanfiction, it could be due to some special training. Maybe he meets a super powerful mentor who has knowledge of all kekkei genkai and teaches him the secrets. Or perhaps he discovers some ancient jutsu that unlocks this ability within him.
Well, it could be something like a fire - based kekkei genkai that allows Naruto to control blue - flame fire which is hotter than normal fire. This would give him an edge in battles and also a new look to his fighting style.
It could be a water - based kekkei genkai. Since the Wave arc has a lot to do with water, it would make sense for Naruto to awaken a kekkei genkai related to water. This could give him an edge in battles, especially in the Wave region where water is abundant.
Naruto himself is often a popular character in these fanfics. Since he has a unique ability to adapt and learn, fans might like to see how he would interact with all the kekkei genkai. Sasuke is also likely to be popular, as his natural talent and quest for power could be further explored in the context of different kekkei genkai.
One interesting concept could be the unique combinations of kekkei genkai. For example, the mixing of different elemental releases in ways not seen in the original Naruto series. It might also explore how characters with rare kekkei genkai interact with the existing Naruto world and its power structures.
In 'naruto all kekkei genkai fanfiction', often there are concepts about how different kekkei genkai interact with each other. Some fanfictions explore how a character with a rare kekkei genkai might be treated in different ninja clans. They might face discrimination or be highly prized. It also delves into how characters develop new techniques based on their kekkei genkai, like creating a new jutsu that combines the power of ice - release and fire - release kekkei genkai.
One common combination is the Sharingan and the Rasengan. The Sharingan's ability to analyze and predict movements can be really useful when Naruto is forming and launching a Rasengan. Another could be the Byakugan and Sage Mode. With the Byakugan's enhanced vision, he can better sense the chakra flow around him in Sage Mode, making his attacks more precise. Also, sometimes you see him with the Ice Release along with his regular Wind Release. He could then create ice - infused wind attacks that are both cold and sharp.