Do you recommend any of the completed novels with the main male lead, such as Death, One Piece, or Naruto Doujin?

Hello, my dear little cutie, let me recommend you a few doujin novels~ First of all, I'll recommend the novel "Starting from the Pirates, Conquering the Heavens and the Myriad Worlds." The main character is called Qi Yu. He started from his soul passing through the Pirates and conquered the myriad worlds. He has supreme skills and can easily deal with One Piece, Naruto, and Death. This novel has been completed. The male protagonist is very powerful. Those who like the male protagonist must not miss it. In addition, the novel "The Legend of Tycoon Koba" was also quite good. The main character used the pay-to-win system to make himself very powerful. This novel is very relaxing and refreshing. It has inspirational and touching elements. It perfectly fits your requirements for the male protagonist. Finally, I'll recommend another book to you. It's called "The Thunder of the Manga World." This is a fantasy-based Doujin novel. It mainly involves the derivative Doujin works of Naruto, One Piece, and Death. The main character, Ming Wang, has cultivated the Chakra Immortal Technique and is extraordinary. He wins by surprise and is definitely the best choice to kill powerful enemies. The above is my recommendation. I hope you like it. If you need it, come to me again!