Soul Society (Dead Spirit World) is an afterlife (also called the spirit world (unlike the Spirit World in the world of the Avatar)). This is also where Shinigami live and where most Souls dwell until they are reincarnated into the Human World.
While Rukia Kuchiki initially describes Soul Society as something of a paradise, where nine out of ten times it is better than the living world and hunger is never a problem, Soul Society is far from sublime. In fact, aside from the slowed aging and aforementioned lack of hunger, life there is much like that in the living world.
Soul Society consists of the Rukongai (Wandering Soul City; Viz "Rukon District"), where souls live when they arrive in Soul Society, and Seireitei (Court of Pure Souls), which is at the center of Soul Society. The mode of life here closely resembles that of feudal Japan.
The Human World and Soul Society are parallel to each other and are two sides of the same coin. Families separated by death are rarely reunited in the Soul Society unless they arrive in Soul Society together. People live nestled together like a family of strangers. One never gets hungry (if she or he doesn't have spiritual powers) and aging is slowed to a great extent, with lifespans of 2000 or more years not being unheard of, though such ages are limited to Shinigami or other Soul Society dwellers with high spiritual power. Children can be born as they are in the Human World. People can also be killed as regular Humans are, though they are capable of surviving wounds that would normally be considered fatal. A soul that dies in Soul Society is reincarnated on Earth as a new Human with no past memories.
Accessing Soul Society
Shinigami enter and leave Soul Society by unlocking the Senkaimon and using a Jigokucho. Pluses, on the other hand, enter Soul Society through the ritual of Soul Burial. When people die, they are assigned a number to a part of Soul Society according to when they died. Spirits can be born in Soul Society as much as in the living world, with the Shinigami acting to balance the souls.
One of the more unusual aspects of Soul Society is its technology level. While the lifestyle and culture of Soul Society is comparable to feudal Japan, they possess technology of a level exceeding that time period. The Shinigami Research Institute has developed amazing technology to their credit, mixing technology with organic components. Allowing for the creation of creatures that do everything from detecting spiritual energy signatures to allowing Humans to see a spirit without the use of a Gigai. They possess touch-screens and databases which are in use for files and historical documentation storage found extensively in the Daireishokairo (Great Spirit Book Gallery), which contains all the knowledge and history of Soul Society. View screen technology that is capable of sending signals to the Human World and Dangai, allowing for face to face conferencing. All manner of portable hand-held devices for tracking and communication purposes. Blending old traditions and ideas with new innovation, Soul Society is an enigma in this comparison.
Main Article: Rukongai
Main Article: Seireitei