User blog comment:Jojo-a-gogo/How far do you think Zushi has progressed in his nen training?/@comment-48285-20121005025841

It's been roughly a year and a half since Heaven's Arena, so I doubt that Zushi knows how to use his Hatsu. Wing said it'd take a few years before Zushi could even manage to get remotely close to Gon and Killua's level of Nen mastery (I'm paraphrasing, of course, since I don't remember what exactly he said). I'd assume Zushi would be around the same floor he was on when Gon and Killua left.

Although, getting to see something about Zushi would be good. Seeing how exactly he incorporates his Nen training in his martial arts training would be very interesting.