jujutsu kaisen is pretty similar in terms of power system
non of the series people posted above me are like hxh, i would say one piece is closest but still different i cant think of anything else right now.
Animation style: attack on titan, jujutsu kaisen, one punch man (all similar to hxh)
Story: idk tbh maybe toriko?
Which unlike anything else recommended in this thread has one important thing in common with HxH. It dont suck
You won't be able to find something like HxH, but if you want to watch some great animes, check out Jujutsu Kaisen, Monster, Rainbow, Mob Psycho, Fullmetal Alchemist Brotherhood, Yu Yu Hakusho.
Hentaihaven similar to HxH
I didn't watch it but homoxhomo fans seems to like it
Owari No Seraph
Black Butler (I guess?)
I think My hero academia is the closest.
Both protagonists young, left their home to become stronger, end up OP and beat bad guys allong the way.
sad reality of finishing hxh is that nothing is really close to it, most of these series that people are suggesting are not similar at all (and no where near as good).
Katekyo Hitman Reborn (but u need watch the first 25 epsodes), KHR great anime
Theres nothing like HxH and it's never getting a sequal so reading manga is actually a good idea, but for anime the closest i can think of is Seven Deadly Sins, but it's gets so bad after s2
i have more interesting question
name shonen anime that better than hxh?
Fullmetal Alchemist: Brotherhood
Made in Abyss
Yu Yu Hakusho - Togashi first manga and only other shonen.
DBZ - Togashi inspiration for Yu Yu Hakusho
Naruto - copies HxH alot, like in the Chunin exan/Hunter exan, Chakra/Nen, story focused on a main character with no father and a friend with family problems, etc...
Jujutsu - Inspired by hxh
Bleach : if you want see badas fight
Fullmetal alchemist : this anime have sad dark comedy nice story
HXh : almost same with comedy badas fight sadness nice story
Onepiece : best all time story fight etc
Onepunchman : epic animation never boring watch this
Jojo : comedy Gore etc
That my recommend the best anime all time great animation fight great story sadness comedy happiness etc