Jiraiya could act as a mentor to Boruto. He might correct Boruto's mistakes in combat or give him advice on how to handle difficult situations. Boruto would listen intently, trying to soak up all the knowledge from this legendary ninja. And they could also have some light - hearted moments, like joking about Naruto's clumsy moments when he was young.
Perhaps an old enemy of Jiraiya who was thought to be defeated but has now resurfaced. This antagonist targets Boruto to get to Jiraiya, thinking that by harming Boruto, he can draw Jiraiya out and finally get his revenge. He would be a powerful and cunning foe, making it difficult for Jiraiya and Boruto to face him.
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.
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.
Boruto might be in awe of teen Naruto's raw power. He would probably be eager to learn from him. And teen Naruto, being the friendly and curious type, would be interested in Boruto's stories from the future.
In a fanfiction, Karin could start off being a bit aloof towards Boruto and Naruto. But as the story progresses, if they face a common enemy, she could become more friendly. She might initially see Boruto as just Naruto's son, but then grow to appreciate his own unique skills and determination. With Naruto, she could have some banter about old times, and they could gradually build a new kind of friendship based on mutual respect for their growth over the years.
Naruto would probably approach Bowser with his usual friendly and curious nature. He might ask Bowser a bunch of questions about his world and his powers. Bowser, being the big, tough villain he is, would likely be initially hostile or dismissive. But Naruto's persistence could break through that. They might end up having a conversation where Naruto tries to convince Bowser to be less of a bad guy, while Bowser tries to intimidate Naruto into leaving him alone.
The characters' interactions would be complex. Hulk might just charge at Kratos out of instinct, seeing him as a potential challenger. Kratos, on the other hand, might hold back at first, trying to gauge the Hulk's power. Iron Man would likely try to scan Kratos to understand his abilities. Thor could start a conversation about their different pantheons.
Superman would probably be polite but a bit reserved when meeting the Avengers. He'd introduce himself simply and state his purpose, which is usually to help. Iron Man, on the other hand, might be a bit skeptical at first and make some snarky remarks. Thor would likely be more open - minded and see Superman as a worthy ally. Hulk might just be interested in seeing if he can take on Superman in a fight.
Artemis could be intrigued by Goku's energy. She might see it as something similar to the divine energy she's familiar with. So she could start asking him about it. And Goku would try his best to explain about ki, using his limited knowledge of such things. They could end up sharing stories about their respective battles and adventures.
Superman would likely be very respectful of the Avengers. He'd be curious about their powers and how they operate as a team. Iron Man, on the other hand, might be a bit wary at first, trying to analyze Superman's powers and find any weaknesses. Captain America would probably admire Superman's strong moral compass and see him as an ally right away. Thor might be interested in testing his strength against Superman's. Hulk could either be aggressive towards Superman or see him as a fellow powerhouse.