It could be a plague. A deadly disease has spread throughout the city, forcing people to stay indoors or flee, leaving the streets empty.
Well, in this 'boston looked deserted fanfic', it could be that there are no people around. Maybe there has been some sort of disaster or event that has caused everyone to flee or hide. The cityscape is desolate, with no cars on the roads and no signs of life in the shops or cafes. It gives a feeling of loneliness and abandonment.
Another idea for the Naruto deserted island fanfic is that Naruto is sent to the island as a form of training. He initially struggles to adapt to the harsh environment. However, as time passes, he learns to control his chakra in new ways, perhaps by using the natural elements of the island. He could also meet a hermit on the island who teaches him some unique ninja techniques.
A possible plot for this fanfic could involve Naruto being teleported to a deserted island which has an abundance of lemon trees. As he tries to figure out how to get back home, he starts to experiment with the lemons. He might find that the lemons have some sort of energy that he can harness. This could attract the attention of some local island spirits or creatures. Naruto then has to use his ninja powers and the power of the lemons to either befriend or defeat these beings in order to find a way off the island.
Maybe he discovers a hidden jutsu or ancient power source that has the ability to transform him into a dragon. It could be something that was left behind by an ancient clan or a long - forgotten ninja. As Naruto is always exploring and trying to become stronger, he stumbles upon this power and it changes him into a dragon.
The diverse and interesting characters of BnHA probably make for great fanfic material.
Maybe it's because the spooky elements in the ghost stories are getting to her. The eerie atmosphere, strange apparitions described in the stories might be making her feel uneasy or scared, which shows in her appearance.
He could meet a lost shinobi from a different village. This shinobi might have been stranded there for a long time and has some valuable knowledge or skills that Naruto could learn from.
It could be jealousy. Maybe Annabeth is getting more attention in school, like from teachers or other students, and Percy, feeling left out or overshadowed, resorts to bullying as a way to bring her down.
One possible reason could be a difference in their values. Naruto, from the Naruto series, values loyalty and hard - work above all. Barbara, perhaps from a different fictional universe, might value something else like purity or grace. Their different upbringings and the worlds they come from could also contribute. For example, Naruto grew up in a world full of ninja battles and had to fight for his place. Barbara might come from a more peaceful or magically - inclined world. When their paths cross, these differences in values and backgrounds could lead to an argument.
Maybe it's a misunderstanding. Barbara could be mistaken for an enemy by Naruto. She might be in his world by accident and her actions seem suspicious to him. For example, if she's looking for something that Naruto thinks is important to protect, he might attack first and then the fight breaks out.