I recommend " The Otaku's Demon Tail ", a fantasy novel about a high-level martial arts world. It's a little similar to the title. Although it was not a Doujin novel, the author's style and plot setting were very similar to the Ghost Blows Out the Light series. I believe that readers who like Ghost Blows Out the Light will also like it. However, the plot of this novel was more fantastical and mysterious than Ghost Blows Out the Light. There were many interesting settings, such as using a cat's body to warm the shadows and so on. I hope you like this novel.😗