The Slippery Ghost's Grandson is a Japanese novel and anime, and there are also corresponding Doujinshi novels. Doujinshi novels were usually adapted from the original work. They would maintain the original work's style and plot while adding the author's own imagination and creativity to form a unique style and storyline. The creation of Doujinshi novels mainly focused on two aspects: one was the second creation of the original work, and the other was the adaptation or continuation of the plot and characters of the original work. In Doujin novels, there might be different versions of the cunning ghost's grandson, including different protagonists, different storylines, different settings, and so on. Doujinshi was a cultural phenomenon with Chinese characteristics. Not only was it popular in Japan, but it also had corresponding fan groups in China, Korea, the United States, and other countries. Through the creation of Doujin novels, fans could express their love and admiration for the original work, and they could also use their creativity and imagination to create their own story of the cunning ghost's grandson.