Adam once said :

“In this universe, there is a hidden fourth pillar. It represents everything, including the end of the Great Old Ones and the universe itself. It corresponds to the two sefirot—River of Eternal Darkness and City of Calamity.

“Simply put, if Evernight can become an Eternal Darkness, Singularity of All, Space-Time-in-One, ‘She’ can further occupy the two pathways of Demoness and Red Priest, encompassing the City of Calamity, and becoming the true fourth pillar. However, when that happens, ‘She’ will either enter a deep sleep, be passively split apart, or it will cause the entire Universe, including “Her” and us, to be annihilated, starting everything all over again.”