Perhaps there is a character who has some sort of past trauma or experience that is affecting the current situation in the novel. This character's actions and emotions could drive the plot forward, especially in relation to the theme of 'letting go'. There might also be a character who represents stability or a voice of reason in the midst of all the chaos of the characters' emotions.
I'm not entirely sure without reading it, but usually in a novel about relationships like this, there would be a couple at the center. Maybe a man and a woman who are facing difficulties in their relationship.
The main theme could be about love and letting go. It might explore the complex emotions involved when a relationship is at a crossroads and one has to decide whether to hold on or move forward.
There is also Ben, who claims to be Christine's husband. He plays an important role in her daily life and in the mystery that unfolds as she tries to remember her past.
Since I haven't actually read 'let him go novel', I can't say for sure who the main characters are. However, in most novels, the main characters are those whose actions, decisions, and relationships form the core of the plot. They could be a couple who are in a complex relationship, or a family member who is facing a difficult situation that requires them to let someone go. It could also be a friend who plays a crucial role in the story's development regarding the idea of letting go.
Kathy is a main character. She is a clone and serves as the narrator. She has a complex personality, being observant and often reflective about her life and the lives of those around her.
The main characters are Kathy, Tommy, and Ruth. Kathy is the narrator of the story. She is a clone and has a very introspective nature. Tommy is another clone. He has a bit of a temper at times but is also very sensitive. Ruth is also a clone, and she can be quite manipulative at times in her relationships with Kathy and Tommy.
Without having read the 'never let you go novel', we can only make assumptions. There could be a young protagonist, full of hope and love, who has a special person in their life. This special person could be a childhood friend, a lover, or a family member. And then there might be antagonists or other characters that create conflict in the story, like a rival in love or someone with a different agenda that challenges the 'never let you go' relationship between the main characters.
Obviously Naruto would be one of the main characters since it's a Naruto - centered fanfic. Sakura might also be a key character, perhaps she helps Naruto in his journey of letting go. And Sasuke could be involved too, as his relationship with Naruto is so central to the Naruto series.
Since I don't know the specific 'let him go real story', I can't tell you the main characters. It could be a story about a woman and a man she decides to let go, so they would be the main characters.
Perhaps it's about two friends. One friend might be going through a tough time, like a mental health crisis or a career setback. The other friend, out of loyalty and friendship, decides that they will never let him go, meaning they will be there to support and encourage him no matter what.
Since I don't know the exact story, I can't say for sure who the main characters are. But if it's a love story, there would likely be a male and a female character, with the male being the one vowing to never let the female go.