Millennium Kingdom

Millennium Kingdom was a Guild that existed in YGGDRASIL.

Background
The Millennium Kingdom's guild symbol takes on the shape of a Crane.

The Craftsman of Dwarf Arc
When Demiurge inquires how far into the future his master has planned for the Sorcerer Kingdom, Ainz would then recall about there being a guild called the Millennium Kingdom. Ainz believes that the idea of the Sorcerer Kingdom existing a thousand years from now is comparable to the Millennium Kingdom. He discern this information passed down to him by Yamaiko regarding the meaning behind what their guild symbol represent.

Strength
Nothing as of yet has been mentioned of there abilities or the number of guild members or guild rank.

Trivia

 * According to Yamaiko, cranes were said to live for a thousand years in mythology and it is supposedly used to symbolize the Millennium Kingdom.