Guardian Spirit Fragment
Broken piece of Guardian Spirit acquired from destroying the Magic Force Guardian Spirit and Evil Spirit in the Magic Force near the Ritual Site of Purge. Gather all and bring them to Dr. Helvetica in the Field of Silence Development Research Center.
Not dropped by monsters.
Cannot be spoiled.
The chances are official (x1). On servers with x10, x100 and higher rates, drop and spoil come more often.