Ethernano (エーテルナノ Ēterunano?) is the term coined to name particles of Magic. Ethernano dwells inside all living organisms and throughout the atmosphere. Nobody knows when Magic began, or how Ethernano originated. To utilize Magic, a Mage must use their (as the case may be) power. Ethernano is the source of Magic Power for all Mages. Every Mage has a container inside their body that determines the limits of their Magic Power. If the case becomes empty, Ethernano will come from the atmosphere and enters the Mage's body and after a while, their Magic Power is restored. However, recent studies have identified another part of the Mages' Magic container that isn't normally used, and contains their dormant power called Second Origin. If the power within this second container is released, then the Mage will receive an enormous boost in Magic Power.
Living organisms cannot live in areas of extremely concentrated Ethernano , as it apparently has detrimental effects upon the structure of the body.
Ethernano is produced in the body through a complex cascade of reactions which is induced by the hormone Ethernol. This hormone acts upon the body's Ethernano container and changes metabolites such as oxygen and glucose into Ethernano precursor molecules . While in the body, Ethernano is stored in the container, it is absorbed through the atmosphere and the body's internal Ethernano precursors are transformed into Ethernano particles when magic is being activated by the mage.