Kagome might be the main character. As she's from the modern world and has a big influence on the events in the feudal era, she could be the one who gets a chance to change the fates of everyone. For example, she could use her modern knowledge to change the course of battles or relationships in the story.
It could be about a character in the Inuyasha universe getting an opportunity to rewrite their destiny. Maybe Kagome finding a way to prevent some of the tragedies that occurred in the original story.
It's hard to say without actually reading the fanfiction. It could be the underdog character who is seeking a new start in life. Maybe it's a young adventurer who has been down on their luck and this chance to change fate is what sets them on a new path.
In this fanfiction, it could also be that a character has made a series of bad decisions in their life and then suddenly a strange event occurs. This event is their chance to change fate. It could be something like a time - travel incident that allows them to go back and correct their mistakes, thus altering the course of their life.
It could be a side character from the original work who didn't get much spotlight. Giving them a chance to live could provide an opportunity to explore their backstory and develop their character further. For instance, a minor character who was killed off early in the story could now become the hero.
Let's say a character has a chance encounter with a hermit - like alien who has a unique knowledge of a powerful energy source. The character, out of curiosity, listens to the alien and starts to explore this energy source. This new knowledge and pursuit could lead the character to discover a new power for the Federation, making them a hero. But it could also attract enemies, so this chance encounter really alters the course of their life in many different and unpredictable ways.
It could be an ordinary gamer who has spent countless hours playing Fate - related games. So when they are transported to the Fate universe, they are the main character.
Perhaps a minor character from the original Fate series could be promoted to the main character. For example, a bystander in one of the battles who witnessed something extraordinary and was then drawn into the world of the Holy Grail War in a more central way in the 'a new fate 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 be an older trainer who has been through a lot in the Pokemon world and is now getting a second chance. Maybe someone who was once a gym leader but lost their position due to some scandal and now wants to prove themselves again.
Naruto is the key character in 'Naruto Chance to Change Fanfiction'. However, other main characters could be the Hokage at the time, like Tsunade. Her leadership and the decisions she makes in the village would be affected by Naruto's changes. Also, characters like Shikamaru, who is one of Naruto's friends and a strategic thinker in the village, would be important as he would be involved in any new plans or changes Naruto brings about.