Hypnos complained that the Defenders have interrupted his investigation of the Eye of Reshanta. Explaining that he could not destroy them recklessly because little is known about them, he asked you to collect the cores of Aether's Defender, Fire's Defender, Ancient Defender, and Nature's Defender. As he asked, you defeated the Defenders near the fortress and collected four different cores from them. When you brought the cores, he said he would send them to Ventus for further study.