Novela de caballeria were stories centered around chivalry and knightly deeds. They often depicted noble and courageous characters. Their significance lies in influencing later works and contributing to the development of certain literary themes and styles.
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.
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.
The novels may also have a strong sense of atmosphere. Since they are in the realm of romance, settings could be dreamy, like old castles or beautiful gardens. The descriptions of these settings, combined with the poetic language, create a world that is both alluring and immersive for the readers.
La Casa de Papel is completely fictional. The plot, characters, and situations were all crafted by the writers for entertainment purposes. There's no real-life basis for it.