Oneirial

Oneirial (Oh-NEH-ree-ahl, Ohn-ee-ree-AHL) is a dreamlike, or dream-associated xenogender. This gender can be unbound, full of mystery and possibly, perhaps secrets and spirituality, or incomprehensible but meaningful, hazy but understood, or deep and infinite and mythical. It is sometimes haunting and unsettling like a nightmare, sometimes pleasent and whimsical like daydream. One can call themself oneiale (Ohn-NEE-elle), similar to man/woman.

Onerocity (Ohn-neh-roh-si-ty) noun, is the the quality of being oneirial; onerialness.

History
Oneirial and its flag were made by tumblr user oneirial on September 1, 2018

Flag
As the creator describes:

"The circles are the hours of sleep and time between dusk and dawn. The different colors represent different dreamy experiences and feelings such as daydreaming, dreams of passion, nightmares, navy being night. Plus dreams are always associated visually with being in clouds or bubbles. They go in a diagonal like the path of the moon and sun in the sky, from light warm color of sunset to light warm color of sunrise"