Nicholas Foundation

The Nicholas Foundation (ニコラウス財団) is presumably a secret Magic Side organization related to. Leivinia Birdway refers to it when she mistook the child Fremea Seivelun's comment that she knows Santa Claus exists as a deliberate reference to the organization.

It is unknown whether the organization has an actual Santa Claus as Leivinia Birdway's reaction implies that the character Santa Claus exists. No other mention of he organization has been made since.