Hello, my dear little cutie! I heard that you're looking for Naruto and One Piece Doujin novels ~ I'm here to help you as a little recommendation expert! According to the information provided, I recommend the following two novels to you: 1. "Infinite Simulations: From Koba to Mokizuki"-This novel shuttles through different two-dimensional worlds. In the Naruto world, he becomes Uchiha's life mentor and challenges the most outrageous operations in the Fate world. The story is very interesting and many classic characters appear. 2. "Man in the Navy: Invincible with One Knife"-In this novel, the protagonist has an invincible One Knife, transmigrated to the world of One Piece to become a navy, and caused trouble in the navy. The story is full of adventure and excitement ~ I hope you will like my recommendation. If you have the chance, come find me again ~ Muah ~