Another plot device could be a mind - link or a shared vision. Maybe Naruto has a moment where he links minds with a past Hokage who was an expert in Rasengan. Through this connection, he gains instant knowledge on how to form and use it. It's a more supernatural way of learning compared to the traditional training.
A lot of fanfictions use the idea of a new teacher or a rival turned teacher. Suppose a powerful and reclusive shinobi appears in the village. At first, they seem like a threat but then they see Naruto's potential and decide to teach him their own unique version of Rasengan. This creates new relationships and story arcs within the fanfiction.
One common plot device is the alteration of major events in the Naruto timeline. For example, a time - traveling Naruto might prevent the Uchiha massacre, which would have huge ramifications for the entire shinobi world. Another is the transfer of knowledge from the future. The time - traveling character could introduce new jutsu or battle strategies that hadn't been thought of in the past. Also, there's often the theme of self - discovery as the character sees their past self or predecessors and gains a new understanding of their own path and purpose.
One common plot device is Sakura setting up 'accidental' meetings. For example, she might make it seem like Naruto and Hinata just happen to be at the same place at the same time, like at a local festival. This gives them an opportunity to interact without it feeling too forced.
A very common plot device is the exploration of their pasts. Fanfic authors might dig into Nagato's past and find some hidden link to Naruto's past. For instance, they could discover that their families were somehow connected long ago. This discovery then forms the basis of their relationship in the fanfiction. It gives a sense of destiny and inevitability to their connection, as if they were always meant to cross paths and influence each other.
One common plot device is the love triangle. It creates drama as Sakura may be jealous of Hinata's relationship with Naruto. Another is the redemption arc for Naruto's feelings. Maybe he used to be confused about his feelings for Sakura but then realizes his true love is Hinata. And there could be a friendship break - up plot device where Naruto distances himself from Sakura due to his newfound love for Hinata.
In many such fanfictions, the power struggle plot device is used. If Sakura becomes too powerful or tries to assert her dominance in a way that overshadows Naruto and Hinata's relationship or their own achievements, they might start to hate her. For example, if Sakura gets a high - ranking position in the village and starts making decisions that affect Naruto and Hinata negatively, it can fuel their dislike. Another aspect is the character arc plot device. The writer might give Sakura a negative character arc where she becomes more self - centered or greedy, which would make Naruto and Hinata dislike her.
In some fanfictions, Naruto might learn Rasengan through the guidance of an alternative mentor. Maybe a powerful shinobi from another village takes him under their wing and shows him different techniques to master the Rasengan. This could add a whole new dynamic to the story and his character development.
In some fanfictions, Kakashi could also play a role. He is very knowledgeable and has seen the Rasengan in action. He might offer some tips on chakra control, which is crucial for Naruto to master the Rasengan.
A typical plot device could be a power - up related to their brotherhood. Since Naruto has his chakra and Trunks has his Saiyan strength, they might discover a new combined power because they are brothers. Also, there could be a time - travel element involved. Trunks is associated with time travel in Dragon Ball, and this could be used in the fanfiction to explain how Naruto and Trunks' relationship came to be. For instance, Trunks could travel to the Naruto universe and somehow become related to Naruto through some time - warped event.
A typical plot device is the discovery of rare Pokemon. In these fanfictions, the main character might stumble upon a very rare Pokemon, and this encounter could attract other characters or Pokemon, gradually forming the harem. Also, the mystery element, such as an unknown power or a hidden place related to Pokemon, can bring the harem members together as they explore and solve it. And of course, the training montages where the trainer helps the Pokemon in the harem grow stronger are quite common too.
The use of alternate universes is also popular. In an alternate universe, Supergirl could have different powers or a different personality, and the same goes for Doomsday. This allows for unique and unexpected storylines where the outcome of their battle is completely different from the mainstream comics or shows.