It depends on the specific context and the author's intentions. Sometimes, it might be considered canon, but without more details, it's hard to say for sure.
The main characters are clearly young Joseph and Dio. Joseph is a character with a strong will and unique abilities, especially his Hamon. Dio, on the other hand, is a powerful vampire with his own set of formidable powers.
I'm not entirely sure as I haven't read it specifically. But generally, a light novel often has a unique story line, perhaps with complex characters and an interesting world - building. It might involve the adventures of the characters, their growth, and the challenges they face in the world of 'ultimate kars'.
A dio graphic novel is a form of visual storytelling that combines elements of both art and narrative. It typically has a sequential art style, with panels that tell a story. The art in a dio graphic novel can range from highly detailed and realistic to more stylized and cartoonish. These novels can cover a wide variety of genres, such as superhero stories, historical fiction, or personal memoirs.
The determination of whether the novel 'Dio' is canon can be complex. It might involve factors like consistency with established lore, authorial intent, and the response from the fan community. Without specific details, it's hard to give a definite answer.
I'm not familiar with the 'ultimate kars light novel' in detail. However, in most light novels, there are usually a protagonist and antagonist. So, Kars is likely the protagonist. As for the other main characters, there could be someone who opposes Kars, perhaps a rival with a different ideology or goal. There may also be characters that are important to Kars's development, such as a family member or a love interest.
Perhaps a plot point where the power dynamic between them shifts unexpectedly. Maybe Joseph discovers a weakness of Dio that no one else knew, leading to a very tense and exciting confrontation. In fanfiction, this could be something completely new and creative that the author invents.
You might be interested in the book "The Substitute Messenger of the School City." It tells the story of a person named Xio who met with misfortune while on a plane. After that, he transmigrated to a city that was 30 years ahead of science and accidentally obtained a substitute. There is also a plot to defeat DIO in the story. I recommend it to you. I hope you like this fairy's recommendation. Muah ~