If Jiraiya had trained Naruto all along, Naruto's growth would have been different. He might have avoided some mistakes and faced challenges with more confidence. Plus, the bond between them could have been even stronger, influencing Naruto's decisions and actions in significant ways.
Well, if Jiraiya had trained Naruto from the start, Naruto might have developed a more strategic mindset and better control over his chakra. Also, he could have learned some secret techniques that Jiraiya knew but never got the chance to teach him.
It could lead to Naruto becoming even stronger and more skilled than in the original story. Jiraiya's training methods might unlock new powers for him.
Well, Naruto with the Rinnegan trained by Jiraiya would be extremely powerful. Jiraiya could teach Naruto unique ways to use the Rinnegan's abilities. Maybe Naruto would combine Sage Mode with the Rinnegan powers, creating new and unbeatable jutsu. He could also use the Rinnegan's ability to see chakra flow to better understand his opponents and counter their attacks more effectively.
One unique method could be training in extreme environments. Jiraiya might take Naruto to a desolate desert or a freezing tundra to test his endurance and ability to adapt. This forces Naruto to find new ways to use his chakra and skills.
A fanfiction about their marriage could explore their past traumas and how they heal together. Jiraiya has his own demons from his past missions and relationships, and Tsunade has lost loved ones. Through their marriage, they could find solace in each other. For example, Jiraiya could comfort Tsunade during her nightmares about losing her brother and lover, and Tsunade could give Jiraiya the stability he always craved. Their relationship would be a journey of growth and mutual understanding.
Naruto would likely become more disciplined. Jiraiya's strict training would force Naruto to focus and follow a routine, which is different from his usual impulsive self.
It could lead to a very different story. Maybe Gaston would change for the better because of Belle's influence, or it could be a constant power struggle between them.
It could have completely changed the power dynamics in Westeros. Cersei's ambition might have played out differently with Rhaegar by her side.
This alternate scenario would likely have had major implications for the Stark and Lannister feud. Maybe it would have prevented some of the conflicts or brought about new ones. There are so many potential storylines to imagine.
It could lead to Naruto developing much stronger abilities earlier and having a different path of growth.
One great idea for a Big City Greens fanfiction could be to focus on Cricket's adventures in the city during a big music festival. He could get involved in helping the musicians set up, encounter some new and wacky characters, and learn more about different types of music.