Guardian Sweetheart and Detective Conan were a very popular combination of anime and novel. For details, please refer to the following paragraph: " Guardian Sweetheart " was a Japanese anime with a children's theme. It told the story of a group of primary school students who had " Guardian Sweetheart " and their relationship. The protagonist, Hinata Shouta, was a primary school student. He had a Guardian Sweetheart that could transform with his Guardian Sweetheart, Meiyu. In the story, many interesting stories happened between him and his guardian sweetheart, but also revealed the true meaning of friendship, family, and growth. " Detective Conan " was a Japanese anime with the theme of reasoning and suspense. It told the story of a high school detective, Kudo Shinichi, who was forced to take a small medicine while investigating the dark organization. After that, he became a primary school detective. He used the identity of Conan to investigate the case with the primary school detective team. This anime was very popular because it not only had cute characters and an interesting plot, but also had many in-depth reasoning and suspense elements that could attract the audience's interest. There were many similarities between the two works, such as interesting characters, profound theme and in-depth plot. At the same time, there were many differences between them. For example," Guarding Sweetheart " mainly told the story of a group of primary school students, while " Detective Conan " mainly told the story of a high school detective and a group of primary school detectives. These differences made it possible for the two works to have a lot of topics that could attract different types of audiences.