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.
The characters included the male lead, Uchiha Tsuki, the female lead, Yosumei, and the female supporting character, Yakura.
Naruto in the Eyes of Samsara Author: I'm a Trash Big Orange Cat. It's a light novel/derivative Doujinshi novel. It has the elements of system flow, relaxation, hot-bloodedness, and leveling. It's finished and can be enjoyed without worry.
[User recommendation: In Naruto World.] It was very powerful to have Shura Eyes.
It was even more awesome to have the Reincarnation Eye.
However, when the guy with the Reincarnation Eye wanted to cheat at the same time…
How invincible would that be?
This made people sigh.
Turtle, hanging on the wall is really awesome!
I hope you will like this book.
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 For example, he could become withdrawn and isolate himself from his friends.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.
It could be about a character who has a very intense and angry look in their eyes that somehow promises pain to another character. Maybe it's a story of revenge where the angry - eyed character is out to make someone pay for a wrong they've done.
It could be a jilted lover. Someone who has been betrayed in love and now has angrily eyes, promising pain to the one who broke their heart. This character would be filled with emotions like anger, hurt, and a desire for revenge.