On another note I am looking at this statement again
銀河
Galaxy A gathering of local planets in the universe. Planets gather and form a nebula, and beyond that, a collection of gathered nebulae is called a galaxy. The four Kaiou who rule over the east, west, south, and north [sections] of the universe actually govern these galaxies. Because the Kami in the Heavenly Realm and the Kaiou supervise the galaxies that exist infinitely in all the universe, the sections known as the East, West, South, and North Galaxies are
denominations that came into use through their duty.
I get we are at Low 2-C so size doesn't necessarily matter but couldn't the space of the Living Realm be argued to be 4x a normal Universe based on this?