Perhaps Naruto is the offspring of a powerful but hidden clan that has been in hiding for generations. And his being in Konoha was part of a long - planned strategy by the clan.
It's possible that Naruto was created through some kind of forbidden jutsu by an evil organization. And they left him in Konoha as part of a plot that has yet to be revealed in the fanfic.
He could be the son of a rogue ninja who abandoned him in Konoha for some unknown reason. This would add an element of mystery to his past.
Well, in such a fanfic, Naruto could be the son of someone like Jiraiya. Jiraiya was very close to Naruto and taught him a great deal. He might have had a secret relationship that led to Naruto's birth. Another possibility could be that Naruto is the son of an unknown shinobi from a far - off village who somehow ended up in Konoha.
Well, the story could develop in many ways. Maybe Naruto could be an orphan found by someone else in the village, like an old ninja who decides to train him in secret. This would change Naruto's backstory completely. He might not have the same kind of pressure or expectations that come with being the son of a famous Hokage. His character could grow in a different direction, perhaps being more independent from the start as he has to create his own identity without the shadow of his 'father' Minato.
His father could be Ash from Pokemon. Ash has had so many adventures and it would be interesting if he somehow ended up in the Naruto world and had a child with a Naruto - world character. His mother could be a random ninja who had a connection with Ash.
Well, the plot could involve Naruto being trained in a very different way. Since he's the son of Minato and Mikoto, he might be taught a blend of the Namikaze and Uchiha techniques. For example, he could learn to combine Minato's Flying Thunder God Technique with some basic Uchiha fire - style jutsu. And there could be a story arc about how he unites the two clans that his parents come from, which have had some historical tensions. He would have to use his unique heritage to bring peace between them.
Naruto would likely be more confident from the start. Since he has the combined blood of Minato and Mikoto, he might not have the same insecurities as in the original story. He would probably be more aware of his potential and be more self - assured in his abilities.
Kushina could be an important character even though she's dead in the original story. In this fanfic, her spirit or memories could play a role in Naruto's upbringing. For example, Minato could tell Naruto stories about Kushina's feisty personality and her love for the village.
Sakura could be a significant character. In the context of Naruto being Minato's son, her relationship with Naruto might change. She could be more in awe of him at first or have different expectations. Also, Sasuke is likely to be a main character. His rivalry with Naruto could take on new dimensions as Naruto has the added legacy of being Minato's son. Their battles and interactions might be more intense and influenced by Naruto's heritage.
It could be Orochimaru. He's always been interested in experimenting and causing chaos. Maybe he wants to use Naruto's parents' forgetfulness as a way to study the Uzumaki clan's mental state or something related to their chakra. He might see Naruto's vulnerability in this situation as an opportunity to get closer to his goals.
Kagome could be a foreign element that brings new magic or abilities. For instance, her spiritual powers could be used to combat certain dark forces in the Naruto world. Shippo, being a fox - demon, could have a connection with Naruto due to his own jinchuriki status. They could all bond over their unique powers and the fact that Naruto is Minato's son.
Minato could be developed further by exploring his time as the Fourth Hokage more deeply. For example, show his political decisions and how they were influenced by the presence of the Kyuubi. Also, his relationship with other villages could be explored, especially in relation to the Kyuubi's power. Maybe he had to make some tough calls to protect the village from those who might want to use the Kyuubi for evil.