Primordial Sea

Primordial Sea
Kanji	原初の海
Government
Form of Government	None
First Appearance
Anime Debut	Episode 382

The Primordial Sea (原初の海, Gensho no Umi) was the primordial realm that existed before the founding of the Three Worlds. This realm served as the home of Adnyeus, the being that would become known as the Soul King. Eventually, he chose to reshape this realm with his powers and split them into three different worlds: the Soul Society, the Human World, and Hueco Mundo.

Overview

According to Yhwach, the son of Adnyeus, this "eternal world" had no concept of death. At some point, the realm was threatened by a "darkness" until that was repelled by Adnyeus' power.

Future

While the Soul King's powers kept the three worlds separated for the following eons, this is not their natural state and thus, should the cycle of Souls ever be disrupted, the three worlds would try to fuse again. The primary purpose of the Shinigami is to govern the souls between the Human World and Soul Society. All souls, including Hollows, are subject to the Shinigami governance of maintaining the balance. According to Rukia Kuchiki, all Shinigami are taught that a severe imbalance would result in chaos and the outright end of the world.

However, Yhwach, the Quincy king, expresses belief that the worlds were always meant to be one; life and death are meant to be the same. When the worlds combine, the result would actually be a world free from the "fear of death". Such a world is Yhwach's ultimate goal. The worlds can alternatively be collapsed by killing the Soul King. After absorbing the Soul King, Yhwach obtained the power to merge the worlds himself.

Trivia

• The existence of a primordial realm predating the Three Worlds was first alluded to in Ryōgo Narita's novel Bleach: Can't Fear Your Own World, though it remained unnamed in said novel.