It's hard to say for sure as it's fanfiction. But it could be an original character created by the fan writer who has the Mirror Release ability. Maybe it's also Naruto himself who discovers this new type of release during his adventures.
Well, Naruto is most likely still one of the main characters. Since it's a Naruto - related fanfiction, he would be central to the story. Sasuke might also be a main character as their relationship has always been a crucial part of the Naruto universe. Sakura could also be there, as she has been an important part of the original story and would likely play a role in this future - oriented fanfiction.
Well, 'naruto mirror release fanfiction' could be about a unique type of fan - created story in the Naruto universe that focuses on a made - up 'Mirror Release' ability. It might involve a character having this special power and the adventures or battles that come with it.
Sometimes, the main character could be an established Naruto character like Naruto himself or Sasuke, but with a new twist where they somehow gain the ability to use light release. They would then have to learn how to control this new power and incorporate it into their existing fighting styles.
Another possibility is that the main character is a sensei or an elder in the ninja village who has knowledge about the Chaos Release. They guide the younger generation in understanding this power. In some fanfictions, it could be a group of characters, each with their own relationship to the Chaos Release, working together or against each other depending on their goals.
Well, it could be an original character created specifically for the fanfiction. This character might be an outcast because of their Darkness Release abilities. Maybe they are trying to prove themselves in a world that fears their power.
There could also be a villain in the fanfiction who wields plasma release in a menacing way. This character might be from a secret organization, using the power to further their evil plans. Their plasma - based attacks would be a major threat to the heroes, forcing them to find ways to counter this dangerous ability.
There might be a mentor - like figure who has some knowledge about the dark release. This character could be important as they guide the younger or less experienced character with the dark release. Maybe they have a hidden past related to the power as well. In some fanfictions, this mentor could be an old ninja who has seen the power's potential and destruction in the past.
The main characters could be a new generation of ninja students in the Naruto world. They stumble upon the knowledge of 'Nightmare Release' and have to deal with the consequences. This could include a young ninja who has a natural affinity for this strange power and has to learn to control it while facing the challenges from other ninjas who fear or want to use this power for their own gain.
It could be a new character who was born with the shadow release ability but was hidden away from the ninja world until now. They would be the center of the story as they learn about their powers and face the challenges that come with it.
One potential main character could be a new ninja who discovers they have the Ink Release. They are an outcast in their village at first because of this strange power but then learn to master it and become a hero. For example, a young orphan who is bullied for having this unusual ability.