Old Moon's Resplendent Sub-weapon: [Season] Earthshaking Kutum

Old Moon Guild's Manager Jetina says that if you give her a battle-worn sub-weapon, she'll grant you a resplendent sub-weapon of enormous potential crafted by the Old Moon Guild.

※ You can proceed with this quest once for every slot per Family.
※ Use the Resplendent Weapon Reform Stone to reform the boss gear rewarded by the quest.
※ The boss gear rewarded by the quest cannot be enhanced normally/with Caphras Stones, nor registered on the Central Market.
※ Jetina will only accept gear that hasn't been enhanced with Caphras Stones.