The shonen anime scene is notorious for its competitiveness and fast content turnaround – shows that once took the entire community by storm were swiftly forgotten once their novelty wore off. Yet, one pillar of the Weekly Shonen Jump famously managed to withstand the test of time, remaining firmly on the top of all popularity polls ever since its debut in 1997. Eiichiro Oda’s One Piece became a fan favorite in no time, receiving an ongoing anime adaptation only two years later and holding the best-selling manga title from 2008 to 2018.
Source:https://www.cbr.com/one-piece-popularity-then-vs-now/