It could be about Harry getting a new chance to save Sirius. Maybe in this fanfiction, the events at the Ministry of Magic unfold differently. Instead of Sirius being killed by Bellatrix, a time - turner - like device gives Harry a new opportunity to prevent his godfather's death. He could use new spells or strategies he didn't think of before.
Well, it could be a new character with a mysterious past that suddenly enters the story and changes the whole dynamic. For example, a long - lost relative of one of the main characters shows up with some hidden motives.
It could also be about a character who gets a new chance to make amends for a past mistake. They might have wronged someone in the past and now they have the opportunity to correct it. This could lead to a lot of self - discovery and character growth as they face the consequences of their past actions and try to make things right.
Naruto is likely to still be one of the main characters. His journey and growth are central to the Naruto universe. Sasuke would probably also be a main character as his relationship with Naruto is so important. Sakura might also be there, as she was an important part of the original team. And Kakashi could be a main character as well, being their sensei.
The plot could involve a Pokemon that was once weak or injured getting a new chance at life. Maybe it was abandoned by its trainer and then found by a kind-hearted person who nurses it back to health and trains it to become strong. This new bond could be the central theme, showing how love and care can transform a Pokemon's life.
There are several possibilities. One is that a major character could have a change of heart. For instance, a character who was once a villain might start to show signs of redemption. Another aspect could be the introduction of a magical or supernatural element that wasn't present in the first part. This could completely change the dynamics of the story. It could also be that the fanfiction delves deeper into the backstories of the characters, revealing secrets that will shock the readers and make them see the characters in a whole new light.
One interesting concept could be new jutsu that the characters develop. For example, Naruto might discover a jutsu that combines his Rasengan with some new element. Another concept could be alternate relationships between the characters. Maybe Sasuke and Naruto have a different kind of friendship that changes the course of the story. Also, new villains or threats could be introduced that are unique to this fanfiction.
It could be a Pokemon itself. For example, a Pikachu that has been separated from its original trainer and has to fend for itself in the wild. But then it meets a new friend, either a human or another Pokemon, who helps it start over. This Pikachu could be the focus of the story as it overcomes its past traumas and looks forward to a new life.
It could still be Voldemort, but in a different form. Maybe he has a new power or a different plan this time. Since it's a new chance, he might have found a way to come back even stronger and more devious than before.