Azure Rings are items that can be traded along with Mirror Fragments at the Exchange Booth to get the Exclusive Orbs for many story characters. Some story characters' Exclusive orbs require a Prayer Ring, Sentiment Ring, or Wish Ring instead. To determine which you'll need for a given orb, check the Acquisition section on the orb's page.
Azure Rings are obtained via the monthly Trachia Assault events for Odin Medals or event badges.
<gallery hideaddbutton=true captiontextcolor=#3a3a3a captionalign=center widths=100px columns=4 spacing=small> Azure Ring.png|Azure Ring|link=Azure Ring Prayer Ring.png|Prayer Ring|link=Prayer Ring Sentiment Ring.png|Sentiment Ring|link=Sentiment Ring Wish Ring.png|Wish Ring|link=Wish Ring <gallery>