Someone explain to me...

How do the coins work...? My friend has all but the elusive Nao coin at this point...he's not quite sure what to do with it, but he did blow off 60 dollars worth of gacha's to do get these coins...@@ I was think about buying the coins from other players but...ehh I'd like to know how to use them first :X

You turn all nine of them into Voight for a full Nuadha set.

Yeah I know that o.o;; but like... just have them in the inventory? or do you just gift it to him x.x?

I'm not sure, but I'd try talking to him with them in your inventory before risking gifting them.

I guess...I could go for another nuadha set since my current one is...bounded to a alchemy char...which is locked out atm =.=;