Another plot could be that a villain from the Dragon Ball universe somehow ends up in the Naruto world and starts causing chaos. Naruto, being the hero, tries to find a way to stop him. He meets a wise old sage who teaches him the Kamehameha as a last - ditch effort to defeat the powerful foe. This would involve Naruto having to quickly learn and adapt to this new power while also dealing with the cultural differences between the two universes.
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.
One idea could be that Naruto discovers a new jutsu that involves using needles as projectiles. He might train hard to master this unique skill and use it to surprise his opponents in battles. For example, he could combine his chakra with the needles to make them more powerful and accurate.
One idea could be Naruto discovers an ancient scroll that details the Mokujin no Jutsu. He then tries to master it in secret to surprise his friends. As he practices, he realizes it has a connection to the forest spirits and he has to earn their trust to fully utilize the jutsu.
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.
In a fanfic where Naruto uses Hyoton, he could be on a mission in a frozen tundra. There, he finds a Hyoton - using enemy. Naruto, being the quick learner he is, observes the enemy's moves and figures out how to use Hyoton himself. He then uses it to defeat the enemy and also to rescue his comrades who are trapped in ice. This new ability also makes him a more versatile ninja in future battles.
Well, a plot could revolve around Naruto using soul magic to bring back the souls of those who were wrongly killed in the ninja wars. This would not only show his power but also his compassion. He might also use it to explore the afterlife and gain new jutsu or knowledge from there. And he could use soul magic to bind the souls of his friends together in a time of great crisis, creating a super - powerful united front.
Perhaps in the fanfiction, Hermione uses a gun that was created by a dark wizard but she manages to turn it into a weapon for good. She could be on a mission to stop a group of rogue wizards who are using both magic and muggle weapons to cause chaos. This would involve her learning about muggle technology in a way she never had before and combining it with her magical knowledge.
A more complex plot might involve Tayuya being captured by an enemy group and Naruto being the only one who can rescue her. Along the way, Naruto discovers some secrets about Tayuya's past that change his perception of her, and she in turn realizes that Naruto is not just a simple - minded ninja as she initially thought. As they escape from the enemy, they form a bond that is both unexpected and deep.
One idea could be that Hitomi has a special power that Naruto discovers during a mission. They then have to work together to keep this power a secret from the wrong people. Another could be a story where Hitomi is from a different village and Naruto has to convince her that Konoha is a place she can trust. Maybe she has some information about a new threat and Naruto needs to protect her while getting that information.
One plot idea could be Naruto trying to understand Pain's ideology on a deeper level while in the midst of battle. Maybe he discovers some similarities between their motives, like their desire for peace in their own ways. Another could be Naruto getting trapped in one of Pain's jutsu and having to experience Pain's past traumas first - hand, which changes his perspective on him.
A more complex plot could be set in a time when there is a famine in the village. Ayame's ramen shop is struggling to get ingredients. Naruto, being the hero he is, offers to help. They travel to different lands to trade for ramen ingredients. Along the way, they encounter various characters from other villages, some friendly and some hostile. This journey not only strengthens their friendship but also helps to save the ramen shop and feed the village.