They could have a big impact on Konoha's community by getting involved in community projects. For instance, they might help rebuild parts of the village that were damaged in a recent battle. Their positive attitude and willingness to help could also bring a sense of unity among the villagers, who might have been divided before due to various issues.
They could bring new ideas. For example, if they come from a different place, their cultural ideas might influence Konoha's fashion or food. Their presence might also inspire the local kids to work harder in their ninja training, seeing two new and exciting role models.
They could have adventures like learning new jutsus. Maybe they meet some of the famous ninjas in Konoha and get trained by them. They might also explore the unique places in Konoha, such as the Hokage Monument.
It could have a positive impact on Naruto's training. If the news spreads, some of the more experienced shinobi who knew Minato might offer to train Naruto in techniques specific to the Namikaze clan. For example, they could teach him advanced wind - style jutsu that Minato was known for.
Konoha would initially be in shock. Naruto is a hero to many in the village, and his sudden departure with Itachi, who was once considered a traitor, would cause a lot of unrest. The villagers might start to question the leadership of the village, wondering why Naruto left and if there was something they could have done to prevent it.
Well, in some fanfictions, Naruto might outsmart Konoha by using his unique knowledge of the village's secrets that others don't know. For example, he could use his understanding of the old tunnels under Konoha to his advantage in a situation where he needs to escape or gain an upper hand in a conflict.
The cafe could become a new social hub. Harry's unique style of running the place and the different types of people it attracts could change the social dynamics. Regarding the yaoi part, it might lead to some gossip and speculation at first, but over time, it could be a place where same - sex relationships are more normalized. For example, young ninja might see that it's okay to have feelings for their male comrades.
It would also create a power vacuum. Naruto was a strong force in Konoha. Without him, the village would be more vulnerable to attacks. Enemies might take advantage of the situation, leading to a whole new set of challenges for Konoha.
It would create a major shift in the power dynamics. Naruto is a powerful ninja, and his departure from Konoha would leave a void. Enemies might see this as an opportunity to attack the village. Also, his friends in Konoha would be deeply affected, leading to internal conflicts within the village as they struggle to understand his decision.
Naruto would probably be conflicted. On one hand, he has a deep love for Konoha, his home. But on the other hand, he might have been hurt by the past events that led to his departure. He could initially be hesitant, but eventually be swayed by the thought of seeing his friends again.
Some fans who love Konoha - centered fanfiction might be disappointed. They may feel that Naruto's 'sickness' of it is a criticism of their favorite type of story.
I don't think it's a super popular concept in the Naruto fanfiction community. There are so many directions fanfiction can take. Some focus on romance, others on battles or new powers. While Naruto's relation to Konoha is fundamental, the idea of him 'owning' it in fanfiction is not something that seems to be everywhere. That said, there may be some fanfictions out there that play with this idea, but compared to things like exploring Naruto's heritage or his growth as a ninja, it's probably not as prevalent.