Item from Overlord by Kugane Maruyama
The guild membership ring — required for teleportation within Nazarick and access to the Treasury, worn by Floor Guardians and key NPCs.
The Ring of Ainz Ooal Gown is the key to Nazarick's internal teleportation network and the only way to access the Treasury's separate spatial plane. Every Floor Guardian and key NPC wears one. Without it, even friendly entities cannot move freely within the tomb. Albedo possesses one, which she treasures as a symbol of her connection to Ainz. Pandora's Actor has one for Treasury access. The rings represent guild membership — in YGGDRASIL, only the 41 members had them. Now they're distributed to NPCs, which Ainz finds bittersweet.
A ring bearing the guild crest of Ainz Ooal Gown. Each ring is identical and functions as both identification and teleportation key.
Also known as: Ring of Ainz Ooal Gown, Guild Ring