Ayu

Ayu is the name given to the collective realms of the Monumidium, Domos, and Abyssos together across all of time. It has had three distinct structural periods, usually referred to as the Primitus Age, the Relict Age which begins at the creation of Ebdypha, and the Young World which begins at the Enlightenment and includes the present day.

The above is a side view diagram of Ayu's realms.