Episode 131 was getting a lot of hype I saw and it's one of the first episodes that's beyond what I've read in the manga. I think the hype was mostly accurate. That was super important and awesome. But...
[spoiler]The turning into an adult part of his NotSuperSaiyan transformation was dumb. I can't take it seriously, which is pretty impressive for shonen. And honestly I think super angry Gon as is was vastly more intimidating. Like it seemed like he was gonna become the most cold and evil person in the show at points. Also, not Pitou!
Pouf might be the most compelling villain in the series. I absolutely love all his ideas and plans right now.