The Wikipedia page documents how the series survived the "4Kids era" (the dark ages), the shift to digital reading, and the death of voice actors (the "Mourning" sections are heartbreaking). It’s a record of resilience, not just of a manga, but of a community that refused to let a translation error or a filler arc kill the dream.
Eiichiro Oda stated that his interest in pirates began in childhood, inspired by the animated series Vicky the Viking . His interest in vikings and the pirate era grew as he researched them. The initial concept for the series involved Luffy as the main protagonist, a decision Oda made because he wanted the story to focus on a boy becoming a man through his adventures, rather than a specific moral lesson.
The crew travels the Grand Line, facing various enemies—including the Marines, the Seven Warlords of the Sea, and the Emperors of the Sea (Yonko)—while uncovering the world's hidden history, including the mystery of the "Void Century" and the true nature of the world government.