Given the title, the jester is bound to be one of the central characters. Additionally, there could be a mentor - like figure in the league who tries to guide the jester or a young prodigy who looks up to the jester. There might also be antagonists in the form of jealous league members who don't like the jester's unorthodox ways. It could also feature a love interest for the jester, someone who sees the good in them despite their jester - like nature and the chaos they might bring to the league.
I don't know for sure, but since it's about a jester among the league, the jester is likely a main character. There might also be other important characters within the league, such as the league's leaders, the jester's friends or rivals in the league.
I'm not sure specifically as there could be many interpretations. It might be a fan - written story about a jester - like character within the context of a league, perhaps a sports league or some fictional league in a game or other media. It could involve the jester causing chaos or providing comical relief among the league's members or events.
It's full of humor and unexpected twists. The jester brings a lot of lighthearted moments and adds an interesting dynamic to the league setting.
The jester could interact with the main heroes in the League. For instance, they might have a lot of scenes with the most popular hero, constantly trying to make them laugh or annoy them. This would create a fun and engaging relationship between the two characters.
As I haven't read the 'jester novel', I can't say for sure. But I would expect the jester to be one of the main characters. There might also be a noble or a king that the jester serves.
The plot could revolve around the jester character causing chaos in the League. Maybe they use their unique skills to disrupt the normal order of the League, like playing pranks on the heroes during important battles or meetings. This would add an element of humor and unpredictability to the story.
The main characters are, of course, the king and the jester.
In 'trapped with jester fanfiction', it might be that the main characters are the jester and a noble who has fallen from grace. They are trapped together, and the contrast between their statuses - the jester being a lower - class entertainer and the former noble - creates an interesting dynamic in the story. The noble might initially look down on the jester but as they face the challenges of being trapped, they start to see the jester in a new light.
The storylines could be all over the place. Maybe it's about the jester's funny adventures within the league or their unexpected heroic moments.
The main character, the 'rose', could be a young, idealistic person. There might be an older, more cynical character as one of the 'thorns'. There could also be a group of characters who are the 'thorns' together, like a clique that doesn't welcome the 'rose' into their midst. Without reading the actual fanfic, we can only guess based on the common interpretations of the 'rose among the thorns' concept.
The main character is probably the dragon. However, there could be other important characters among the devils. For example, a devil with a unique power or a devil who has a special connection to the dragon, either as an enemy or a potential friend. There may also be side characters that are either part of the dragon's species or other creatures in this devil - filled world that help or hinder the main characters' actions.