That’s interesting to know. But the manga is not finished yet, right? Hope I remember correctly but I think I heard that, due to some illness or something, the mangaka is very slowly updating this manga and might even not finish it. But I’m not sure. However, I know there’s an extra manga story about Hisoka. Since he’s my fav character I guess I’ll read it someday :)
Oh yeah, the manga is infamous for it’s absolutely awful schedule (And honestly, super rushed art sometimes), I’d say that it’s highly likely it’ll never finish. The last chapter was released 2 years ago and the entire arc drags itself out even more than the Chimera Ant arc.