It's a festival related to fiction. It might be a celebration of fictional works such as novels, short stories, or perhaps fictional films and shows. It could be a platform where authors, filmmakers, and enthusiasts come together to share, promote, and celebrate fictional creativity.
Since I'm not familiar with this particular graphic novel, it could cover a wide range of themes. It may revolve around the dentist as a central character, showing their work - life balance in the context of their home. There could be stories about the history of the house and how it became a dental practice. It might also depict the community around the house and how the dentist and the house are perceived by the neighbors. It could be a story full of human interest, with the dentist's house serving as the backdrop for all kinds of interactions, emotions, and events.
I'm not sure. It depends on various factors and how the story was presented. Sometimes stories are based on real events but might have some fictional elements added for entertainment.
Not having read the graphic novel, it's pure speculation. The main characters could include the dentist, who is probably central to the story. There might be a nosy neighbor who is always curious about what goes on in the dentist's house. Also, if there are any apprentices or trainees in the dental practice, they could be main characters. Maybe there's a patient with a phobia of dentists who has a character arc throughout the story.
Ryuk would probably just be amused. He is a Shinigami who has seen a lot in his existence. Fanfiction is just another strange human creation to him. He might chuckle at some of the more outlandish ideas in the fanfictions, like a character having superpowers beyond the Death Note.
Misa would likely be excited. She is a big fan of Light and the whole 'Kira' concept. In fanfiction, if there are scenarios where she has more power or a closer relationship with Light, she would be all for it. However, she might also get jealous if there are other female characters getting too close to Light in the fanfictions.