In this fanfic, it might also re - imagine the battles involving Pain. Instead of the battles being just about physical combat, it could explore the psychological warfare aspect more. Pain's abilities, like the Six Paths of Pain, could be used in more creative ways to create a more engaging and different story. It could also focus on how the other characters in Naruto try to understand and counter Pain's complex ideology while dealing with the destruction he causes.
Well, in the original Naruto story, Pain's actions are somewhat more straightforwardly presented as villainous. But in the fanfic, it might humanize Pain more. It could show his past traumas and how they led him to his extreme beliefs and actions.
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 For example, he could become withdrawn and isolate himself from his friends.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.
His fighting style could become more aggressive. Without the fear of pain, he might be willing to use more extreme techniques that would otherwise be too dangerous because of the pain they cause to the user. He could push his body to the limit more often.
Konan could be really interesting. In some fanfictions, she might have a different backstory or motivation that affects the Naruto vs Pain fight. For example, she could be secretly trying to stop Pain from going too far in his destruction of the Leaf Village.
Jiraiya could be a great addition. Since he was Pain's teacher, his presence could add a lot of depth to the story. He could offer insights into Pain's past and also help Naruto understand Pain better.
Mentally, it would be a huge blow to the ninja community. Naruto inspired many with his never - give - up attitude. His death might make some ninjas lose faith in their own abilities and the future. But on the other hand, it could also fuel the determination of some to become stronger in his memory.
I would recommend 'Pain's New Beginning'. In this fanfiction, Pain gets a chance to relive his life after a strange encounter. It has some really cool plot twists that keep you hooked. It also explores his relationships with other characters in new ways.