The thing I think hes trying to get at is you can only get the key mold on one character only, even though you have the mysterious box on all characters. What's the point of getting the mysterious box on all characters if you can only use it one, but I also knew about this step to so I saved all my rare bounties, but I didn't get one at all on my hunter and well I thought, you can at least get the the quest on all characters. Turns out you cant, so it's either bugged or that's just messed up.

Somethings up with it because I didn't unlock izanami on my warlock and I'm able to ignite the forge there and I'm assuming you need that open to hit the bergusia forge.. Im just missing the izanami key right now for my warlock.. Maybe the thing is bugged for some and not for others ... Kinda like people having missing frames after forging one powerful frame