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.
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.
Maybe it's some kind of special jutsu or a curse that backfires in a way that numbs his pain receptors. For example, a powerful sealing technique might have been placed on him accidentally or on purpose that has this side - effect.
There are many out there. A really good one might focus on the emotional reactions of Team Minato. For example, Minato might be proud of Naruto's strength and how he overcomes Pain. Kakashi could be in awe at Naruto's new techniques. Their reactions can enhance the overall viewing experience in the fanfiction.
Well, one possible plot could be that since Naruto is Minato's brother, he is not ostracized by the village. Instead, he is seen as a potential heir to Minato's legacy. This would change his entire character arc. He might not have the same drive to prove himself, but rather focus on living up to Minato's name. There could also be a plot where they face a common enemy together, and Naruto's bond with Minato helps him unlock new powers or techniques. Another aspect could be the exploration of their family secrets and how it impacts the whole Hidden Leaf Village.
I'm not sure specifically as there could be many different interpretations. It might be about Harry from the Harry Potter series reliving or coming to terms with past traumas, like the loss of his parents or the challenges he faced at Hogwarts in the past.
I'm not sure specifically as there could be many different takes on it. It might be about a character named Percy who is haunted by past traumas or difficult experiences. Maybe it delves into his emotional journey as he tries to come to terms with what has happened before.
A possible plot could involve Naruto being reborn in an alternate timeline where he has all his memories and abilities from his previous life. As Minato's sensei, he could use his knowledge of the future to prevent certain tragedies. He might teach Minato advanced ninjutsu techniques and also instill in him a sense of unity among the ninja clans. This could change the course of history in the Naruto world, with Minato becoming an even more powerful and wise leader under Naruto's tutelage.
One possibility could be that Minato was under some kind of mind - control spell. Maybe an enemy of Konoha managed to manipulate him into thinking that Naruto was in danger by being in the village. So, Minato kidnaps Naruto to take him to what he believes is a safer place. But as the story unfolds, Naruto tries to figure out what's wrong with his father and tries to break the spell on him.
Well, one possibility is that Minato arrives just in time to save Naruto from a powerful enemy like Orochimaru. He could use his Flying Raijin to quickly reach Naruto and then use his other jutsu to fend off the attacker.