My favorite arcs were the hunter exam (which is an amazing way to start an anime) and the chimera ant arc.
Seeing the friendship between Gon and Killua progress was surely something.
The cons i have with this anime is that i found the phantom troupe to be slightly boring and the chimera ant arc feeling a bit slow at times.
I also do on plan on reading the manga, even if it has a lot of hiatuses.
10/10 anime, I have nothing more to say.
