The materials are not only used for forging new equipment or gear, but they can also be used to upgrade current weapons or items. (nintendofuse.com)
My favorite current weapon is one I made myself. (lifewire.com)
You can also find and equip new weapons or upgraded versions of current weapons, and to assist you on the battlefield, you will choose one of four warhorses that have the capability of trampling enemy soldiers. (psxextreme.com)