If Boruto meets Neji in a fanfic, it could also have an impact on Boruto's view of the ninja world. Neji had a complex view of the world due to his own upbringing. His insights could make Boruto think more deeply about things like destiny and hard work. Maybe Neji could even give Boruto some advice on how to deal with his enemies in a more strategic way.
Their interaction could change the plot significantly. For example, if Neji teaches Boruto a new jutsu, Boruto could use it to defeat a powerful enemy. This would then shift the balance of power in the story.
Perhaps in this fanfiction, Neji is brought back to life somehow. Boruto, being curious, approaches Neji. Neji then discovers how much the ninja world has changed since his time. Boruto could show Neji the new technology in the Hidden Leaf Village. Neji might be a bit shocked at first but then start to see the potential in these new things. They could also form an unlikely friendship, with Neji guiding Boruto in matters of honor and discipline, which are values Neji held dear.
One interesting plot could be that Boruto accidentally travels back in time and meets Neji. At first, Neji is on guard, thinking Boruto is an enemy. But when Boruto explains his situation, Neji decides to help him get back to his own time. Along the way, they face some common enemies. Boruto shows Neji some of his unique abilities, and Neji teaches Boruto some of his wisdom and combat skills.
In a 'Boruto meets Kurama' fanfic, Boruto might learn about Naruto's past with Kurama. Maybe Kurama would share some of his old battles with Boruto, giving Boruto a new perspective on his father's journey.
Another plotline might be that Kurama, having been with Naruto for so long, has some unfinished business related to the ninja world. He enlists Boruto's help to complete it. This could involve uncovering secrets from the past or righting some old wrongs. And along the way, Boruto would grow as a ninja and as a person.
At first, they might be a bit suspicious of each other. Boruto has heard stories about Kurama but has never really interacted with him. Kurama, on the other hand, might be cautious as Boruto is Naruto's son and not sure if he can be trusted. But as they spend more time together, they could start to respect and rely on each other.
Maybe in the fanfiction, Jiraiya is summoned by a new jutsu gone wrong. When he meets Boruto, he mistakes him for Naruto at first. As they interact, Jiraiya realizes Boruto's own unique struggles. He shares his wisdom about handling the expectations that come with being a ninja from a famous family, and Boruto learns a great deal from him.
One possibility is that Kurama senses a new threat approaching and decides to team up with Boruto. They could go on an adventure together, with Boruto having to learn how to work with the powerful and sometimes grumpy Kurama. Along the way, Boruto could learn more about the nature of chakra from Kurama, which would be a great development for his ninja skills.
In this fanfiction, Boruto might learn some unique ninja techniques from Jiraiya. Jiraiya could see the potential in Boruto and train him in his own unorthodox ways. Maybe Boruto would be introduced to Jiraiya's toad summoning, which could add a whole new dimension to his combat abilities.