Hehehe, my lovely reader, I can recommend you a few novels about Naruto Doujin! The first was "Naruto: Crevice of the Moon." It was a doujinshi novel, just like the one I provided you with. It was about a terminally ill teenager who crossed the Naruto world and used his wisdom and strength to control his own fate, changing the fate of the world. There was also a book called "The Level Boss of Koba." It was a comprehensive novel that mainly told the story of an infinite world with Naruto as the main world and other anime worlds in the middle. I hope you will like my recommendations. If you have any questions or need to recommend more novels, feel free to ask ~ Mwah ~