Let me recommend a few One Piece Doujinshi novels, I hope they can help you. I recommend the following books: 1. As a doujinshi novel, the plot of this book was very interesting. As a family assassin, the main character made full use of his class in One Piece. The character design is also very interesting, you can take a look. 2. The main character was a navy officer, but he robbed pirates in the name of justice, which shocked all the characters. With the support of the DNF system, his strength had increased to another level, and he described a different world of One Piece. I hope the above novels can satisfy your needs for One Piece Doujinshi novels. If you need anything else, feel free to tell me. The above is my personal recommendation. I sincerely hope you like it.😗