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.
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.
In many fanfictions, after the Pain arc, Naruto and Hinata's relationship often deepens. Naruto starts to see Hinata in a new light. He realizes her strength and her unwavering feelings for him. This can lead to more interactions between them, like Naruto becoming more protective of Hinata and Hinata being more confident in expressing her love for Naruto.
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.
A healer from a far - off land who has a special ability to not only heal physical wounds but also emotional traumas. This character could be drawn to Konoha during the Pain Arc because they sense the great pain and suffering. They could interact with Naruto and help him deal with his own inner turmoil in a different way, while also having their own sub - plot of trying to understand the nature of the ninja world.
After the Pain arc in fanfiction, Hinata's character development in relation to Naruto is multi - faceted. Her love for Naruto, which was so boldly shown during the Pain encounter, now becomes a driving force for her growth. She may learn new skills or develop new aspects of her personality to better fit into Naruto's world. For instance, she could start learning more about Naruto's dreams and goals and find ways to support him more effectively. This would not only strengthen their relationship but also help Hinata grow as an individual character.
Fanfiction often explores it through character introspection. Writers show Tony's internal thoughts as he deals with the pain. For example, he might think about how the arc reactor is both a gift and a curse.
In many fanfictions, Naruto might use new jutsus or a deeper understanding of his own power. Maybe he taps into a more powerful form of the Nine - Tails' chakra and combines it with his Sage Mode in a unique way to overpower Pain.
In some fanfictions, Naruto's pain might manifest through his actions. For example, he could become withdrawn and isolate himself from his friends. This is because Naruto has always been a social person, so any deviation from his normal behavior could be a sign of his internal pain.
One possible cause could be his sense of failure. Naruto always wants to protect his friends and village, so if he fails in a mission or is unable to save someone, it can cause him great pain.