Eye of Hypnos
Source: Yaen

1. Location

Complete Bikini Island purple quest to unlock purple quest on Resort Gravis which then allows you to enter this island

2. Island Heart acquisition

  • The Island Heart can be obtained by maxing affinity with the NPC on the island.
  • The purple quest on the island is straightforward.
  • There will be a point where 3 yellow quests appear. You have to finnish those 3 yellow quests before you can continue the purple quest.
  • The last part of the purple quest chain requires you interacting with an object pictured here.

3. Mococo Seeds