User blog comment:Martialmaniac/Ten - Is it worth mentioning?/@comment-31525652-20180417024512/@comment-5780397-20180417120642

Thanks! I agree with you, we can't be sure, but I deemed it worth asking anyway. Tserriednich is a bit of a special case because, like Yuhirai and Shedule, he's still only half-awakened, but you are right. I don't think one counts as a Nen user if they can only use Zetsu, though, because that's only closing the aura nodes.

However, you just reminded me that all Greed Island players are capable of using Ren and Hatsu to access the game. Is that something we should mention?