Well, it could be about Naruto having to deal with the strict and fiery nature of Akainu as his father. Maybe Naruto has to adapt to a more military - style upbringing while still holding onto his own ninja values.
The plot might involve Naruto struggling to fit in with the Akainu - influenced family or group. He could be constantly at odds with Akainu's ideas, yet slowly learning some useful skills from him. For example, Akainu's strong sense of justice, though different from Naruto's ninja world's concept, might shape Naruto in a new way. And there could be conflicts with Naruto's friends who don't trust Akainu or his family. Also, Naruto might have to face enemies who target him because of his relation to Akainu.
One possible plot could be that Akainu attacks the Straw Hat's new island, endangering Luffy's friends. Luffy, filled with rage, challenges Akainu. After an intense battle, Luffy discovers a new form of his Gear ability that allows him to withstand Akainu's magma and finally defeat him.
Naruto's character would likely become more complex. He might develop a harsher edge due to Akainu's influence, but still retain his core kindness.
One common theme is the clash of ideologies. Akainu has a very strict and uncompromising view of justice in his original story, while Naruto has a more forgiving and rehabilitative view. So when they interact in fanfiction, this clash often forms a central theme.
Well, it could be about Naruto having some hidden connection to Scorpion. Maybe Scorpion had a secret relationship and Naruto is the result. Naruto might inherit some of Scorpion's skills or traits, like his puppet - making abilities in a really unique way. He could struggle with this new identity and how it fits into his ninja world, especially with his existing bonds in Konoha.
The plot might involve Naruto having to deal with the stigma of being the'son' of Sasori. He could struggle to find his place in the ninja world while also having to face the enemies that Sasori made in his past. And he might use the skills he learned from Sasori in unexpected ways to protect his friends and the village.
The plot might revolve around Naruto being ostracized because of his relation to the 'son of scar' title. He then has to prove himself not only as a ninja but also to overcome the stigma associated with this identity. This could lead to many adventures where he battles against those who misjudge him and in the process, uncovers the truth behind the scar and his heritage.
Well, it could be about Naruto growing up in the Hyuga clan. Maybe he discovers his true parentage early on and has to deal with the expectations and politics of the clan. He might learn the Gentle Fist technique in a different way than Neji or Hinata.
Well, it could be about Naruto having some of Azula's traits. Maybe he has her strategic mind. For example, in battles, he could use her style of planning and outwitting opponents. And perhaps he has some of her fire - bending - like abilities translated into his ninja skills, like really powerful and precise fire - style jutsu.
Well, it could be about Naruto having some special powers or a connection to Ra due to being his 'son' in this fanfiction. Maybe he has to face new enemies or challenges related to this new identity.
Well, it could be about Naruto having some unique powers inherited from being the son of Medusa. Maybe he can turn people to stone with his gaze like Medusa. And his ninja skills combined with these new powers could make him an even more formidable fighter in the Naruto universe.