In the world of anime, stories can often stretch out across multiple arcs, seasons, and years, occasionally punctuated by filler episodes. It's not surprising that some of these animes lead to disappointing narrative decisions, story beats that are inconsequential, and long-winded unnecessary arcs. This is exactly what happened to The Promised Neverland, a thrilling cerebral masterpiece that hit a very satisfying narrative stride with its first season, only to have its sophomore year fall flat among fans.
Source:https://www.cbr.com/the-promised-neverland-second-season-unneeded/