Well, a plot twist could be that since Naruto is Hiruzen's son, the Akatsuki targets him differently. Instead of going after the Nine - Tails inside him in the usual way, they might try to use his relationship with Hiruzen against him. They could try to blackmail Hiruzen into making certain concessions for the safety of his son. Also, Naruto's training might be more intense and different. He might be taught more about the political side of being a ninja by Hiruzen himself, which changes his perspective on the ninja world.
One possible fanfiction could be about an OC (original character) who is a student of Hiruzen Sarutobi. This OC has always heard tales of Minato Namikaze's heroics. The story could involve the OC getting into a difficult situation, perhaps a dangerous mission, and drawing inspiration from the skills and courage of Minato. Hiruzen, as the wise teacher, could guide the OC in learning from Minato's example. For example, the OC might be struggling with a new jutsu, and Hiruzen tells them how Minato mastered a similar one with his determination and innovation.
Yes, there are quite a few. Some fanfictions might focus on their interactions within the Hidden Leaf Village. For example, they could be involved in a joint mission where Hiruzen, as the experienced Hokage, imparts some of his wisdom to Kushina. This could lead to a great story of mentorship and friendship.
One common theme is friendship. Given their different positions in the village, a story could be built around how they become friends. Another theme could be protection. Since Kushina is a jinchuriki, Hiruzen might be involved in protecting her from those who would seek to use her power for evil.
If Naruto were Hiruzen's son in a fanfiction, his character development would take a whole new turn. He'd grow up with a different set of values instilled in him. He might be more diplomatic from the start, having been exposed to Hiruzen's leadership style. His motivation to become Hokage might be less about seeking recognition and more about following in his father's footsteps. Also, his relationship with the village elders would be different. Instead of being an outcast, he'd be seen as the heir, which would bring its own set of challenges and opportunities for growth.
In the fanfic, Hiruzen could train Naruto in stealth and intelligence - gathering techniques. Naruto is often portrayed as a straightforward fighter in the original series. But with Hiruzen's training, he could become a more well - rounded ninja. He might learn how to infiltrate enemy bases, gather crucial information, and use that knowledge to outwit his opponents. This would add a new dimension to Naruto's character and his abilities in battles.
Naruto's jutsu repertoire would be different. Hiruzen could teach him some of his own signature jutsu or long - forgotten techniques. This would make Naruto stand out even more in combat. He might also be better at taijutsu as Hiruzen could have trained him in more traditional and refined forms of hand - to - hand combat. His overall combat style would be more refined and less reliant on brute force. This new - found finesse in combat would earn him more respect from his peers and opponents alike.
One plot idea could be that Sakura, in her pursuit of medical ninjutsu knowledge, discovers some ancient scrolls that were once in Hiruzen's possession. She then tries to seek out the secrets within them with the help of Hiruzen's spirit or memories that somehow still linger. This could lead to her developing a new form of medical ninjutsu that combines old and new knowledge.
A plot idea could be that the OC is an artist who comes to the Hidden Leaf to paint the great ninjas. Minato Namikaze catches the OC's attention as a heroic figure, and Hiruzen Sarutobi is interested in how the OC can use art to preserve the village's history. But there is a group of anti - art ninjas who think the OC's work is a distraction. Minato, Hiruzen, and the OC have to work together to convince the village that art has a place in ninja culture and also protect the OC from those who oppose them.
In this type of fanfiction, it's possible that the story delves into Naruto's backstory and how being Sarutobi's son would have affected his childhood. Maybe he would have grown up with more guidance and support, which could have changed his personality. Instead of being the lonely outcast that he was in the original story, he could have been more confident from the start. The fanfiction might also introduce new characters related to Sarutobi that play important roles in Naruto's life. There could be new adventures and challenges that are unique to this new family dynamic, such as Naruto having to uphold the Sarutobi family name and legacy within the Hidden Leaf Village.