A specific type of item
in the Final Fantasy
series* where the item may not be use
d or equip
ped as par a normal item, nor discard
ed. The item may only be used to advance the story, but still resides in inventory
. These items usually reside in a special menu, but have been known to live in the general inventory in some of the series' titles (Final Fantasy IV
comes to mind).
Often, just owning the item will trigger the events to further the story when you talk to the right person. However, sometimes you must actually use them in the proper location. This action is usually prompted by a item menu coming up when you talk to something.
* As well as other games, I'm sure.