Enhancement scroll for equipment and Asper are necessary to enhance a piece of equipment.
Enhancement scroll can be purchased from each equipment merchant.
Up to Lv. 3 can be safely enhanced, but there is a failure chance to enhance from Lv.4 and an item can be destroyed according to the probability.
Dismantling equipment is possible after clicking the Dismantle icon from your inventory and Star's Essence broken from dismantling can be obtained.
Star's Essence obtained is used for fusing items.