Assuming you are referring to Absolute Virtue here. His drops are to be turned in to the guy in Tavnazia who does the 'In the Name of Science' quest. This is the quest you do to get elemental obis and gorgets. When you trade one of the AV drops to him, he gives you an item in return. The items include Rafael's Rod, Ninurta's Sash, Fitsuno Mitama, Mars's Ring, and Minerva Ring.