Caravan
Caravan Interior
Installing Interior Facilities in the Caravan makes it possible to craft weapons and expand storage.
In addition, you can expand the range of facilities that you can install by increasing the Caravan's level.
Crystals are required for installing Interior Facilities, while Crystals and Materials are required to upgrade them.
If you don't have enough materials and/or crystals for an upgrade, you can choose to use Phantasm Gems instead.