Who are the main characters in 'behind the smile story'?

I'm not sure without more context. It could be anyone from an ordinary person trying to hide their troubles to a public figure who has to maintain a positive image.

Without reading the 'the smile short story', it's pure speculation. But perhaps there's a character who is known for their unique smile, and other characters are drawn to them because of it. There could also be a character who is initially distrustful of smiles and their journey throughout the story could be about learning to understand the true meaning behind them. It could also be that the main characters are in a situation where a smile is a rare occurrence, and when it does happen, it has a profound impact on the story's direction.

Since we don't have more details, it could be a group of characters. Maybe a couple of best friends who go on adventures together and their interactions are full of humor and joy, making them the main characters in this'smile' - themed graphic novel. There could also be a wise old character who guides the others towards more positive outlooks and smiling more often.

Since I don't know the exact story, it could be an ordinary person who becomes the main character through their extraordinary experience. Maybe it's a young boy or girl.

The story behind a smile is complex. It could stem from a funny incident, a heartfelt connection with a loved one, or it could be a way to be polite in a social situation. Sometimes, a smile is a way of coping with difficult emotions without showing them outwardly.

The story of a smile can be complex. It could stem from a moment of pure joy like getting a promotion or a simple act of kindness. Or it could be a forced smile to put on a brave face in difficult times.

Since I haven't read it, I can't say for sure. But it's likely that there is the villain, of course. There might also be a protagonist who is in opposition to the villain, perhaps a hero or someone with a strong moral compass who is trying to thwart the villain's plans.

There's no way to know for definite without reading the fanfic. However, it might feature the RWBY protagonists. Ruby, with her upbeat and positive nature, could be a likely candidate for providing service with a smile. Weiss, despite her initial cold exterior, could also have moments of warm service. Blake and Yang too might be involved in some way, depending on the nature of the service and the plot of the fanfic.

I'm not sure specifically who the main characters are without having read the novel in detail. But typically, there would be at least one male and one female lead in a novel like this.

Maybe there is a group of friends in the story. One of them might be the key character who has the special ability to charge magic with a smile. The others could be supporting characters, each with their own role in helping or hindering the main character's journey with this special magic.