Hey, let me recommend you a few One Piece Doujin novels! "Origins from One Piece": This light novel used the setting of the Underworld to link up One Piece, Naruto, Reaper, Sword God Realm, Jojo, and many other fanfiction series. I recommend it to Doujinshi fans who like multi-elements and cross-border settings ~ "Starting from Pirates to Plant the World Tree" was a novel about the infinite universe. The protagonist would automatically learn skills such as language proficiency and Kendo mastery after planting a sapling. Having experienced many worlds such as One Piece, Pillar Destroyer Blade, Death God, and the Sword and Sword Realm, it is very suitable for readers who like farming, cultivating, and leveling up! [One Piece: The Silver King: The protagonist has the Silver King's ability to live forever. He transmigrated to the world of One Piece and wants to live freely.] This doujinshi novel was not too complicated and was very suitable for readers who wanted to relax! I hope my recommendation can meet your needs. If you have any questions or feel that it's not bad after reading it, please come to me again. I hope you like my recommendation.