The plot could start with Naruto finding a strange scroll that contains the secrets of the Kamehameha. He tries to decipher it with the help of his friends like Sasuke and Sakura. Sasuke might be skeptical at first, but as Naruto starts to show progress, he becomes more interested. Naruto then has to train his body to withstand the power of the Kamehameha. He might do this by doing intense physical training in addition to his normal ninja training. Eventually, he masters the Kamehameha and uses it to protect his village from a new and powerful threat.
In this fanfiction, perhaps Naruto is sent to a different dimension where he meets Master Roshi. Roshi sees Naruto's potential and decides to train him in the Kamehameha. Naruto combines his own ninja skills with the Kamehameha. For example, he might use his shadow clone jutsu to create multiple clones that all perform the Kamehameha at once, creating a super - powerful attack. This would make him even more of a formidable opponent in the Naruto universe.
Well, the plot could involve Naruto coming across a powerful being from the Dragon Ball universe who decides to teach him the Kamehameha. Naruto, being the eager learner he is, starts practicing it. He might struggle at first because the chakra control required for the Kamehameha is different from his normal jutsu. But as he trains more, he gradually gets better. He could then use this new skill in a big battle against a common enemy, surprising his friends and foes alike.
One idea could be that Naruto somehow travels to the Dragon Ball universe and learns the Kamehameha from Master Roshi. Then he returns to his own world and uses it in an unexpected battle against a new and powerful enemy, like a rogue ninja with the ability to absorb chakra. This would add a new dynamic to his fighting style.
Perhaps a powerful villain has the ability to combine different powers from different universes. This villain targets Naruto and in the process of fighting against this threat, Naruto somehow absorbs the knowledge of the Kamehameha. He then has to figure out how to use it in his own ninja - style way.
One possible plot twist could be that Naruto has a really hard time controlling the Chidori at first. Since his chakra nature is different from Sasuke's who originally used Chidori. He might accidentally release too much chakra and the Chidori becomes a much larger and more uncontrollable form, causing chaos during his training sessions. Another twist could be that when Naruto finally masters it, it takes on a unique form because of his Uzumaki chakra. It might have some kind of sealing ability added to it, which is different from the traditional Chidori.
Well, one possible plot could be that Naruto is sent on a mission to an ancient land where kung fu is the main form of combat. There he meets a master who sees his potential and decides to teach him. Naruto, with his usual determination, quickly picks up the basics and starts to incorporate kung fu moves into his ninja style, creating a whole new and powerful fighting technique.
Naruto's understanding of different forms of power would expand. The Kamehameha is based on ki energy, which is different from chakra. This would make him more open - minded about other types of energy and power sources. He might start to explore if there are ways to combine chakra and ki, which could lead to him developing entirely new jutsus. This exploration could also make him more respected among the ninja community as a pioneer of new power - combining techniques.
In this fanfiction, a plot twist could be that Naruto's learning of Hiraishin and Rasengan is somehow linked to the Akatsuki's plans. They might be secretly manipulating events to make Naruto learn these techniques, with the intention of using him as a weapon or a decoy. Naruto then has to figure out their scheme while still trying to master the techniques, adding a whole new layer of drama and conflict to the story.
One possible plot twist could be that Naruto has a really hard time controlling the Lightning Armor at first. Instead of it enhancing his speed and power, it causes him to accidentally electrocute his friends. This would create a lot of tension and drama as he has to figure out how to master it without hurting those around him.
A great plot twist could be that the explosion alchemy Naruto learns is actually a corrupted form. As he tries to master it, he starts to lose control of his chakra and his mind. He has to fight against the dark influence of this false alchemy while also trying to find the true and pure form of it. This internal struggle could be a major part of the fanfiction.
A really cool plot twist could be that the Hiraishin no Jutsu is linked to Naruto's Uzumaki heritage in a way that no one expected. For example, the jutsu was originally developed by an ancient Uzumaki clan member, and Naruto's latent Uzumaki powers are the key to unlocking its full potential. So, instead of just learning it like any other jutsu, he has to dig deep into his family's history and powers to truly master it. This would add a whole new layer to his journey and his connection to his clan.
One possible plot twist could be that Naruto initially struggles a great deal with Shiki Fujin. Maybe he accidentally activates it in a wrong way and it starts to drain his chakra in an uncontrollable manner. This could lead to a situation where his friends have to step in to save him, and in the process, he discovers a new way to control the jutsu.