Harem novels usually depicted a world full of magic and fantasy, in which female characters lived in the harem of male rulers, established relationships with other female characters, and developed storylines around these relationships. Some of the common characteristics of fantasy harem novels include: 1. Powerful Magicians and Warriors: The protagonist of a fantasy harem novel is usually a powerful magician or warrior. They use magic or weapons to protect themselves and the female characters in the harem. 2. Various magic and fantasy elements: Harem novels usually contain various magic and fantasy elements such as magic towers, magic potions, magic scrolls, etc. 3. Harem system: In a fantasy harem novel, the protagonist usually has one or more harems. The female characters in the harem are his spouse or lover. 4. Complex relationships: The relationships in fantasy harem novels are usually complicated. There are various emotional entanglements between the protagonist and the female characters in the harem, such as love, jealousy, hatred, etc. 5. Various adventures and challenges: Harem novels usually contain various adventures and challenges. The protagonist needs to use magic or weapons to protect himself and other characters and overcome various difficulties. Harem novels are filled with magic and fantasy elements, in which female characters live in the harem of a male ruler and establish relationships with other female characters, and the plot develops around these relationships.