In the 'naruto feels no pain fanfiction', how is this ability achieved for Naruto?

He could feel it through a shared chakra link. Since they are related and Minato sealed the Nine - Tails in Naruto, there might be a latent connection that gets activated in the fanfiction, allowing him to sense Naruto's pain on a physical and emotional level.

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.

The plot could involve Minato being brought back to life or having a vision where he steps into Naruto's shoes. He might feel Naruto's pain from constantly being underestimated because of his status as a Jinchuriki. This could lead to Minato trying to find ways to comfort Naruto from afar, or even influencing the events around Naruto in a supernatural way.

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.

Since Naruto can't feel pain in this fanfiction, his combat style would likely change a great deal. Normally, pain is a signal that tells a fighter to be cautious. But without it, Naruto could throw himself into battles without a second thought. He might not bother with defensive maneuvers as much, relying more on his raw power and stamina. He could end up using more powerful and risky jutsu without worrying about the consequences of getting hit, which would be a huge shift from his more cautious moments in the original series.

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 For example, he could become withdrawn and isolate himself from his friends.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.

Objectivity in Naruto fanfic can be maintained by being fair in power scaling. This means not making one character too weak or too strong compared to their original capabilities. For example, Sasuke is a very strong character, but if in a fanfic he is made to be defeated by a minor character without any logical explanation, it goes against objectivity. Moreover, in terms of plot development, it should be logical. If there is a conflict, it should have proper build - up and resolution. Just like in the original Naruto story, where the Akatsuki's plans were gradually revealed and then countered by the protagonists in a believable way. Also, when introducing new elements like new villages or alliances, they should fit within the overall framework of the Naruto world.

He might focus on his training. By pouring his energy into getting stronger, he can distract himself from his lonely feelings. Naruto has always been determined, and training gives him a sense of purpose.

In many fanfictions, Naruto might start by training harder. He throws himself into his ninja training as a way to distract himself from the loneliness. It gives him a sense of purpose and also helps him become stronger.

Another way could be in the way his powers affect him. Maybe the use of his powers starts to corrupt him physically or mentally. His eyes could turn into some sort of inhuman or demonic - looking form, and his mind could be filled with uncontrollable rage and bloodlust every time he taps into his power, making him seem like a monster.