Hehe, let me recommend a few doujinshi novels after 3000 AD to you! "Ghost Concubine Above" was a fantasy romance novel written by the author, Yue Xijiu. It was about how a female protagonist who had transmigrated to an alternate era faced demons and ghosts. There was also "Saint Seiya of the Pirates," which was written by the author and Ling Sui Sui Nian. It was a light novel and a derivative doujinshi novel. It described the brilliance of the Saiyan power in the foreign world. There was also the book "Since the exposure of the Hongmeng Golden Roll", written by the author, Great Master Haotian. It was a fantasy novel about the foreign continent. With the Hongmeng Golden Roll as the background, it told the story of a person who raised the level of the cultivation method in Nine Regions and gave all the forces ideas. I hope you like my recommendation, Muah ~😗