There are many types of love stories like my boyfriend is a monster and my son is a monster that can be referred to as the following: 1. Father and son indulging in beauty: This kind of theme usually involves the emotional entanglement and growth process between father and son. Sometimes it involves the supernatural relationship between father and son, such as father and son transformation, father and son connection, etc. 2. Demon's indulgence: This genre usually involves the emotional entanglement between supernatural elements such as demons and monsters and humans. Some novels would also tell the story of a demon becoming a human, experiencing all kinds of hardships and trials, and finally obtaining happiness and true love. 3. Vampires 'indulgence: This genre usually involves the emotional entanglement between supernatural elements such as vampires and werewolves and humans. Some novels also told the story of vampires becoming humans, experiencing all kinds of hardships and trials, and finally obtaining happiness and true love. 4. Ghosts indulging in beauty: This kind of theme usually involves the emotional entanglement between supernatural elements such as ghosts and monsters and humans. Some novels would also tell the story of how ghosts and gods became humans, experienced all kinds of hardships and trials, and finally obtained happiness and true love. These were just some of the common types of fantasy novels. In fact, there were many other types of novels that could be chosen according to their preferences and needs.