Well, in Naruto Pain Arc fanfiction, a common concept is the idea of different character interactions. For instance, how the other villagers of Konoha interact with Pain during his invasion. Some fanfictions might show certain villagers trying to understand his motives rather than just seeing him as an enemy. Also, there could be concepts about the after - effects of Pain's attack on Konoha. Like how the village rebuilds not only physically but also emotionally and politically.
Some fanfictions in the Naruto Pain Arc might focus on the idea of redemption for Pain. Maybe he has a change of heart mid - battle due to Naruto's words. This could lead to a whole new storyline where Pain actually helps Konoha against other threats. Another concept could be the exploration of the rinnegan's powers in ways not shown in the original arc. Fanfic authors might create new jutsu related to the rinnegan that Pain could use.
One idea could be exploring a different backstory for Pain. Maybe he had a secret friendship with a Konoha ninja before turning to his dark path. This could add a new layer of complexity to his character and the conflict in the arc.
One interesting concept could be exploring Ruby's growth in ways not fully shown in the original. For example, her relationships with other characters might be deepened. Maybe she has to face a new type of Grimm that challenges her in a different way than before, which could lead to her developing new combat techniques.
One interesting Naruto arc fanfiction could be about an alternate ending to the Pain arc. Maybe Naruto finds a different way to convince Pain without using brute force. Another could be a fanfiction set during the Chunin Exams arc, where a minor character gets more spotlight and changes the course of the exams in a unique way. There are also fanfictions that explore what would happen if Naruto was raised by different people during his early life in the Hidden Leaf Village arc.
In yugioh arc v oc deck fanfiction, the idea of creating decks based on different dimensions' card pools can be really cool. Since Arc V has multiple dimensions, an oc deck could blend cards from different dimension - specific sets. Also, the interactions between the oc deck and the existing well - known decks in the show can lead to exciting duels and plot developments. It could show how an underdog with an oc deck rises against the more popular decks in the tournament.
One interesting concept could be new ritual monsters. They might have unique abilities that are different from the ones in the original Yugioh Arc V series. For example, they could have special summoning conditions related to the Ritual Dimension.
Naruto is definitely one of the most popular characters. Since he is the main protagonist in the original arc, he often takes center stage in fanfiction too. His growth, his new jutsu, and his interactions with Pain are frequently explored. Another popular character is Pain himself. His complex motives and powerful abilities make him an interesting subject. Writers often try to humanize him more in fanfiction.
One of the most unique 'Naruto meets Pain' fanfiction concepts is in 'Naruto meets Pain: The Reverse Roles'. In this story, Pain is the one trying to save the village and Naruto is the one causing destruction. It completely flips the original roles and makes for a thought - provoking read. Another is 'Naruto meets Pain: The Dream World' where their encounter takes place in a shared dream world, and the rules of that world change how they interact and fight.
Some fanfictions might explore the idea of Naruto befriending an Espada. This friendship could lead to Naruto learning about different ways of combat and power management from the Espada. It could also result in the Espada having a change of heart due to Naruto's positive influence, and together they could face new threats in the Naruto universe that neither could face alone.
In Naruto fanfiction, the Sharingan is often explored in unique ways. For example, some fanfictions might expand on its ability to not only copy jutsu but also to predict an opponent's moves on a whole new level. Another interesting bloodline concept could be the Uzumaki's massive chakra reserves, and fanfictions may play with how this could be used in different scenarios, like creating entirely new jutsu.
In 'naruto dark naruto fanfiction', the concept of Naruto's doppelganger or 'dark Naruto' is often explored. This could be a manifestation of his repressed negative emotions. It might be that this dark Naruto has its own goals that are contrary to the real Naruto's. For instance, it could want to destroy the Hidden Leaf Village instead of protecting it. And the story could revolve around how Naruto deals with this inner darkness, either by trying to suppress it or, in a more extreme version, merging with it and becoming a different kind of hero or anti - hero.