Well, we can assume that the main characters are the sidekick, who is the focus in terms of his lack of success with the girl. The girl herself is a main character in a sense as she is the center of the sidekick's unfulfilled desires. And there's probably a lead male character, the one who stands in contrast to the sidekick. He might be more heroic, more confident or have other traits that make him more likely to win the girl's heart in the web novel's plot.
The main theme could be the exploration of the sidekick's role in a story. In this web novel, it seems that the sidekick never getting the girl is a key aspect. It might show how the sidekick's identity is defined by this fact. It could also be about the power dynamics in relationships within the story. Maybe the sidekick is always in the shadow of the main character, which affects his chances with the girl. And it might also be about the expectations that the readers have when it comes to this type of story pattern.
Since I haven't read the novel, I can't say for sure. But based on the title, the two main characters are probably the girl who is not noticed and the guy who doesn't notice her.
Since it's a web novel, there could be a group of friends around the perfect girl. These friends could have their own personalities and stories. One of them might be the comical relief character, always making jokes and lightening the mood. Another could be the loyal and brave friend who always stands by the perfect girl's side. And of course, there could be family members of the perfect girl as well, who play important roles in shaping who she is.
I'm not certain, but it's probable that the main character is the swamp girl. She could be accompanied by some animal friends she's made in the swamp, like a wise old owl or a friendly snake. There might also be a character who is an antagonist, perhaps someone who wants to drain the swamp for development and thus comes into conflict with the swamp girl.
The main character is the girl who is at the center of the story. There may be detectives or other individuals who are either trying to help her or are part of the conspiracy she's facing. We also might have some characters related to the cybercrime world, such as hackers or criminals with high - tech skills.
The main character is likely the doctor himself. There may also be some important monster girl characters who are his regular patients or who play significant roles in his adventures.
I think it's more of a sidekick. It's there to add some interesting elements to the story rather than being the main hero.
The girl who never made a mistake is the central figure. There could be secondary characters like her classmates. They might react to her in different ways, either being envious of her seemingly perfect record or perhaps feeling pressured by her example. And there may be an authority figure, like a school principal, who notices her unique trait.
Based on the title, the main characters are likely the girl and the boy. The girl is the one who is not being noticed, and the boy is the one who is oblivious to her.
The following are some recommendations for novels where the main character is a sidekick: "The Little Follower Dressed as the Villain": This novel tells the story of a male protagonist who transmigrated to a parallel world to become the villain's little follower. However, he decided not to be the villain anymore and began a passionate story. 2. "Dressed as the Male Lead's Little Follower (Transdimensional Book)": The main characters of this novel were Han Xu and Mu Anyi. It told the poignant and pure love story between them. This novel was well written and was worth recommending.