Perhaps it's a result of a failed experiment by one of the village's scientists or ninjas. They could have been working on some kind of time - space ninjutsu and something went wrong. Naruto just happened to be in the wrong place at the wrong time. It might be someone like Shikamaru, who is known for his intelligence and might have been trying to create a new strategy involving time manipulation but it backfired on Naruto.
Maybe in the time loop, Naruto discovers new aspects of his chakra. He could find out that he has a hidden power that he was unaware of before. This could lead to him training in new ways during the loops to master this power. It might also change his relationships with his friends and teachers as they notice his new abilities and the mystery behind them.
One interesting plot twist could be that every time Harry repeats the day, a different character becomes aware of the time loop. For example, in one loop it's Hermione who figures it out and tries to help Harry break the loop in a very scientific way, using her vast knowledge. Another could be that Voldemort somehow gets a hint of the time loop and tries to use it to his advantage, like setting up different traps for Harry each time the loop restarts.
Hermione Granger would definitely be a huge help. She's extremely intelligent and well - read in magic. She could study all the books in the library to find a way to break the time loop. Ron Weasley could also be important. His loyalty and courage would keep him by Harry's side through all the loops, and he might come up with some practical, if not always academic, solutions.
Sasuke could also be a character who breaks the time loop. He is highly intelligent and has a thirst for power and knowledge. If he realizes that he is in a time loop, he would likely be very intrigued and start investigating. His Sharingan might give him some insights into the nature of the loop and help him find a way to break it.
The time loop in Evangelion time loop fanfiction affects the plot in multiple ways. Characters get the opportunity to redo actions, so they can avoid past mistakes. This might mean that battles with Angels are fought differently. Also, relationships between characters can be rewritten. If Shinji, for example, has a different attitude towards Asuka in a new loop, it will influence how they interact and the events that follow. It basically gives the story a chance to deviate from the original path and explore new storylines.
The genie could be the catalyst for the time loop. Maybe the genie made a mistake while granting a wish, and that created the loop. Or perhaps it was a punishment for misusing the genie's power. The genie's magic would be the force that keeps the loop going, constantly resetting the time and circumstances.
Well, Arya Stark has a good chance. She's highly adaptable and has been through so much. Her skills as a Faceless Man could potentially be used to discover the secrets of the time loop and break it. Also, Jon Snow. He has a special connection to the North and has faced death and come back. His unique position and the respect he commands could help him find a way to end the time loop. And then there's Tyrion Lannister. His intelligence and ability to think outside the box might lead him to the solution to break the loop.
One major difference is the way 'time loop web fiction' can handle world - building. In web fiction, the time loop can be set in a vast and complex digital world that is constantly evolving. For instance, the loop could be part of a huge online game world where the rules change each time. In traditional time loop stories, the world - building is often more simplistic and focused on a particular location or situation. Another aspect is the audience interaction. Web fiction can have comments sections where readers discuss theories about the time loop, which can influence the author and the direction of the story. Traditional time loop stories don't have this kind of direct interaction with the audience.
In an endless time loop involving a genie, one could experience infinite wishes. Maybe at first, the person might wish for wealth, but as the loop repeats, they realize the hollowness of material things. They could start wishing for knowledge, like how to break the loop. Eventually, they might discover that the true power of the genie is not in the wishes but in the journey through the loop and learning about themselves.