S'souveia Jluis

S'souveia Jluis, also known as Andromeda, Messier 31 and Pious Champion is a barred spiral galaxy located over 2.5 million lightyears from Earth. It is the home galaxy of the S'southi and is significantly more dangerous than the Milky Way Galaxy due to political instability.
==History==
===History===
====Observation History====
The Andromeda Galaxy has long been observed by the many races of the Milky Way Galaxy. Beginning in the First Age of Reconciliation (9th Century BCE), the Covenant Empire began to closely observe the foreign galaxy, which they had designated as Pious Champion, with the aid of a Forerunner structure known as The Descry, discovering evidence of an extremely advanced civilisation within the galaxy. Despite the existence of this civilisation being essentially proven by these findings, many within the Covenant's leadership remained cynical and some went as far as to declare the finding as nothing more than a heretical claim to undermine the state's religious authority. As a result, a faction of zealous Sangheili and San-Shyuum clans banded together and used their political influence to have observation of Andromeda deemed heretical, and The Descry was turned into a place of worship for members of the Covenant. 
This major setback in the observation of Andromeda resulted in the S'southi's massive empire not being discovered until directly before the Forefather War.
Humanity had long had an obsession with astrology, with the first descriptions of Andromeda being written long before humans reached space. Despite this, the various nations of Earth and later the United Nations Space Command did not have the technology to observe the Andromeda Galaxy closely, rather they were restricted to distant observation.
====Political History====
"Other galaxies have faltered on the path of life, becoming victim to the plague that is decadence and infighting. Those galaxies now lay as a monument to their incompetence and a reminder that we were right, and that they were wrong." - Sark speaking to Eddie SalimAlmost a hundred thousand years before the Battle of Installation 00, a race of extremely advanced organisms known as the S'southi had formed a prosperous and extremely strong empire that spanned across the entire Andromeda Galaxy. The S'southi were a race entirely founded upon the principles of conquest and eradication, and their military, despite not having any extant threats to contend with, dwarfed even the military of the Forerunner Ecumene in the Milky Way Galaxy. However, this would not last long, as the Forerunner-Flood War, an extremely large conflict within the Milky Way, was nearing it's conclusion and many Flood vessels had begun infiltrating cosmic objects near the Milky Way, such as the various satellite galaxies and nebulae, but most importantly the S'souveia Jluis. First contact between the Flood and the S'southi resulted in the rapid infection of an entire planet on the extreme outer rim of S'southi space. However, due to the empire's strict policies and regulations pertaining to inter-planetary travel, the infection was unable to spread further without the need for direct confrontation with the S'southi military, which had already quarantined the system. Despite the quarantine, several other worlds in the system were infected in rapid succession at which point the S'southi realised the true nature of the Flood - an unbeatable horror. The system was obliterated by S'southi dreadnoughts with the hope that the Flood could be defeated, but it was in vain, as the Flood had managed to break the quarantine blockade and infect several surrounding systems. 
=====S'southi - Flood War=====
The activation of the Halo Array did not eradicate the Flood's presence within Andromeda, and the S'southi were forced to actively engage and defeat the Flood alone. However, the S'southi had something the Forerunners did not - clarity. Not held down by internal politics, corruption and decadence, the S'southi had mobilised their entire military from across the galaxy to deal with the new threat, and were willing to obliterate entire systems just to slow the Flood's spreading influence. The Flood, on the other hand, were not well-suited towards fighting the S'southi, as their vessels and vehicles were semi-organic and essentially almost immune to the Flood infection, with some exceptions. This meant the Flood, rather than adding to their numbers with every battle, were slowly beginning to be whittled down in battle after battle before their eventual defeat and eradication. Unlike the Forerunners, the S'southi knew that the Flood was a threat with no real "cure" and therefore it shouldn't be studied, rather it should be exterminated, and in order to ensure that the Flood was truly gone, an entire arm of the Andromeda Galaxy was razed by the S'southi warfleet.
Shortly after the S'southi - Flood conflict, the S'southi suffered from an unknown event known as the Sriao Dod'da which rendered weakened the authority of the Empire and forced an extreme downsizing of both its military and economy. Following this event, the S'southi remained in technological and military stagnation until the onset of the Forefather War, with very few major technological advances being achieved in this time.
At some point during the 90,000+ year gap between the S'southi - Flood War and the Forefather War, the S'southi had a series of encounters with an extra-galactic civilisation, however these encounters came to a sudden halt and the S'southi did not encounter a foreign power again until the months prior to the Forefather War.
=====Forefather War=====
The Lights of Purity, a Sangheili-led faction formed during the Great Schism, discovered a supermassive Forerunner sensor array which was quickly occupied by their Ministry of Extra-Galactic Affairs and closely monitored. Within weeks, the array was receiving signals from Forerunner-based sources within Path Kethona and Andromeda, and the Lights of Purity outfitted an expedition using a Forerunner vessel discovered by the Ministry of Divine Knowledge and began the Void Journey, the goal of which was to reach the Andromeda Galaxy and investigate the assumed Forerunner presence. Instead, once the vessel arrived in the Andromeda Galaxy it was quickly identified by the Forefather Binding Enlightenment and wiped out by the S'southi after an initial encounter, provoking the Forefathers to lead the S'southi in an invasion of the Milky Way Galaxy.
=====Anarchy=====
Following the eradication of the entire S'southi Armada due to the activation of Installation 01 during the final battle over the Ark, and the death of both the Forefathers and the S'southi leadership, the once-great empire descended into anarchy. The galaxy was divided into hundreds of warring armies and empires, resulting in the S'southi almost driving themselves to extinction through this constant bloodshed. The hundreds of species that had been ruled by the S'southi for a hundred thousand years finally gained their freedom and massive reprisal massacres and genocides took place across Andromeda targeted against the S'southi. The galaxy had become so violent that the Galactic Alliance declared the entire galaxy a prohibited danger zone.
== Notable Locations ==
"Black upon black, there is no hope here, just apathy." - Ministry of Extra-Galactic Affairs report on S'souveia JluisS'souveia Jluis is home to an extensive amount of notable and important locations, both documented and undocumented. The most notable of which are as follows:
* S'southeia - Mysterious and semi-mythical homeworld of the S'southi race.
* Bast'exm - Site of first contact between the Flood and S'southi, now an extensive debris field.
* Reverence - Facility of Precursor origin, location varies but is typically between 10 and 15 light-years beyond the galactic rim.
* Iko Tes - Former Imperial S'southi capital and an extremely ancient and archaeologically rich urban planet.
* Iko Des - Series of stations in the Iko Tes system with extremely advanced vessel-construction capabilities.
* Iko Claxse'm - Faster-than-light portal system based in the Iko Tes system with the capabilities to move small - medium sized cargo and goods across the galaxy almost instantaneously. Disabled following the fall of the S'southi Empire
* Derovaon - S'southi-revered planet and the site of a skirmish between the S'southi and an unknown extra-galactic force.
== Inhabitants ==
Andromeda is home to a diverse range of sentient species, such as:
===Extant===
* S'southi - The most widespread and powerful race within the galaxy. They ruled the entire galaxy for shortly over a hundred thousand years before the collapse of their empire, and at the height of their power had fleets of billions of vessels. Despite this, by the time of the Forefather War they were a weakened species with a stagnating and slowly declining empire with only under a hundred thousand vessels on hand. 
Following the fall of their empire, the S'southi are rapidly becoming an endangered species due to constant brutal conflict between different S'southi factions and multiple genocides and massacres staged by formerly-enslaved species.
* S'southi Ex'dai - A genetically modified and improved version of the S'southi that represents the apex of S'southi evolution. They made up almost the entire warrior class and therefore there are only a handful of surviving members of this species following the Forefather War.
* Ilus - The Ilus are a warrior species that was considered honorary S'southi citizens rather than slaves and made up atleast 5% of S'southi ground forces. They were almost driven to extinction during the Forefather War.
* Dxefov'n - A beast-like race that was enslaved to the S'southi.
* Lih - A race formerly enslaved to the S'southi. Many members of this race now exist within the Milky Way but are being hunted by Lights of Purity-led death-fleets. 
* Deggao - A race formerly enslaved to the S'southi. 
===Extinct===
* Jerlon - The Jerlon were a species that once inhabited the galaxy prior to the foundation of the S'southi Empire but suddenly disappeared from it. It is possible that the name "Jerlon" actually refers to the Precursors.
* S'exdev - A species that was once enslaved to the S'southi but driven to extinction gradually over the millennia.