Promise Neverland in my opinion is.

LOL Promised Neverland does take the crown for having such an awful second season! Can't help but agree. Would also like to toss out absolutely nasty "shows" like Redo of Healer. Ugh what a garbage fire that I'm still surprised made it to air

To me, the most controversial and garbage one is without question Redo of Healer. Wanted to cleanse my sole after just an episode and was absolutely unwilling to give it my standard 3-episode watch before making a decision on it. Absolute worst.

However, the anime that comes to mind First (possibly bc I try to forget the above mentioned at all cost) is Nanna. I loved that show so much and watched religiously only to never, Ever get a final episode?! Dispute the 49 other good episodes, the frustration has never left me, and it still haunts my existence even now.

Devilman Crybaby.