Quest 79

Walkthrough

 * Talk with Polfan in the cave at D4~D5 of Orphea Region West. They will ask you to travel to Orphea Region East and defeat some enemies.
 * Make your way Orphea Region East and travel to roughly around B5. The enemies you are looking for are called "Gum Shield". Defeat 5 of these and a cutscene should play.
 * Once your cutscene has finished return to Polfan to hand in the quest.