It would be a moment full of anticipation. Sarada, with her hand on her kunai, ready for any threat. Madara, standing tall and imposing. The air around them would seem to crackle with chakra. Sarada's Sharingan would be activated, trying to predict Madara's moves. Madara, on the other hand, would be smirking, amused by the young Uchiha's bravado. Their first words to each other could set the tone for the entire encounter, whether it be one of hostility or a begrudging respect.
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.
In such a fanfiction, Naruto might initially try to persuade Madara to give up his evil plans. He could use his talk - no - jutsu to appeal to Madara's better nature, if there is any left. Maybe they would have an epic battle first, with Naruto showing off his new Sage of Six Paths powers against Madara's Rinnegan abilities.
One possible plot could be that Sarada, while on a solo training mission in a mysterious forest, accidentally stumbles upon a time - warp or some ancient jutsu residue that transports her to the era of Madara. She is initially in shock but quickly realizes she has to use her wits and skills. Madara, seeing this strange girl with Sharingan eyes, is both intrigued and cautious. They might start off as adversaries, with Sarada trying to find a way back to her time and Madara suspecting her of being a spy. However, as they interact more, Sarada might learn some long - lost Uchiha techniques from Madara, and Madara could be impressed by Sarada's modern - day ninja knowledge.
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.
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 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.
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.