Development
Oda's primary inspiration for the concept of Devil Fruits was Doraemon; the Fruits' abilities and uses reflect Oda's daily life and his personal fantasies, similar to that of Doraemon's gadgets, such as the Gum-Gum Fruit being inspired by Oda's laziness.[9] When designing the outward appearance of Devil Fruits Oda thinks of something that would fulfill a human desire; he added that he does not see why he would draw a Devil Fruit unless the fruit's appearance would entice one to eat it.[10] The names of many special attacks, as well as other concepts in the manga, consist of a form of punning in which phrases written in kanji are paired with an idiosyncratic reading. The names of some characters' techniques are often mixed with other languages, and the names of several of Zoro's sword techniques are designed as jokes; they look fearsome when read by sight but sound like kinds of food when read aloud. For example, Zoro's signature move is Onigiri, which is written as demon cut but is pronounced the same as rice ball in Japanese. Eisaku Inoue, the animation director, has said that the creators did not use these kanji readings in the anime since they "might have cut down the laughs by about half".[11] Nevertheless, Konosuke Uda, the director, said that he believes that the creators "made the anime pretty close to the manga".[11]
Oda was "sensitive" about how his work would be translated.[12] In many instances, the English version of the One Piece manga uses one onomatopoeia for multiple onomatopoeiae used in the Japanese version. For instance, "saaa" (the sound of light rain, close to a mist) and "zaaa" (the sound of pouring rain) are both translated as "fshhhhhhh".[13] Unlike other manga artists, Oda draws everything that moves himself to create a consistent look while leaving his staff to draw the backgrounds based on sketches he has drawn.[14] This workload forces him to keep tight production rates, starting from five in the morning until two in the morning the next day, with short breaks only for meals. Oda's work program includes the first three days of the week dedicated to the writing of the storyboard and the remaining time for the definitive inking of the boards and the possible colouring.[15] When a reader asked who Nami was in love with, Oda replied that there would hardly be any love affairs within Luffy's crew. The author also explained he deliberately avoids including them in One Piece since the series is a shōnen manga and the boys who read it are not interested in love stories.[16]