Most of the people who migrated to the Foross Sector during the time of the great mining operations arrived as individuals or small families and formed new communities among members of their own species, and even some mixing between different species, that developed new local cultures created from a blend of their countless different backgrounds. However, the enkai of Sarhat and Kion are a notable exception to this.
In the early days of interstellar space exploration and colonization, the enkai homeworld was greatly divided into dozens of major states with tens or hundreds of millions of people and in a persistent state of shifting alliances and rivalries. Each of the larger power blocks established their own colonies in different star systems, among the largest and most successful were Turik and Parakarit. Over time, these colonies became fully independent states in their own right, and began to establish many new colonies of their own to become less reliant on trade with other powers. 400 years ago, the government of Turik created a mining colony on Halon, and a few decades later Parakarit followed up with a colony on Kion, which saw some mining as well bit became primarily the main food producer for the entire sector. Once the depletion of the mines on Halon became evident, much of the mining operations and workers were gradually moved to new mines on Sarhat, mostly in the newly founded colonies Tauros and Korlis. Eager not to miss the opportunity this time and leave all the profits to their main rivals, Parakarians also established the Partenas colony to run their own mines on the planet as well.
Almost all the enkai who migrated to the Foross Sector were from either Turik or Parakarit, and both groups had their own separate colonies that saw each other as their main rivals. Only very small numbers of individual enkai from the homeworld or other major colony worlds have moved to Kion, Sarhat, or Halon, and were all integrated into the Turikan or Parakarian culture of their new homes.
Eventually mining in the Foross Sector became less profitable, and the original rivalry between Turik and Parakarit faded into history as both planets became leading members of the Confederated Worlds. This led to a sharp reduction and eventual discontinuation of any funding or direct support for the small remote colonies of the Foross Sector and the establishment of the local oligarchies that rule the sector to this day. The rivalry and open hostility between Turik and Parakarit has long been a thing of the past now, and the cultures of both worlds have changed significantly from what they were three centuries ago. But the enkai of the Foross Sector still identify themselves very strongly as Turikans and Parakarians and cling tightly to the customs and traditions of their ancestors. Or at least to the distorted image they have retained of their cultures from over ten generations ago. While Turikans and Parakarians see other people from their culture in other colonies and even on other planets as distant relatives, the other culture could very well be an alien species. And all enkai can tell very easily which culture a person is from, even though they look pretty much identical in appearance to any other people.
Turikan culture, as it exists today on Sarhat, distinguishes itself by a high appreciation and admiration for big and dramatic speech and actions. Boldness is considered a virtue and being somewhat confrontational seen as a sign of strength.
In contrast, the Parakarian culture of Kion and Partenas puts a higher value on the appearance of composure and politeness, and sees emotional outbursts as somewhat undignified. But especially for the oligarchs, this rarely translates into generosity or humility. They tend to be just as selfish, petulant, and backstabbing as their Turikan counterparts. They just maintain the pretense that they are not, even though it is usually obvious to anyone around.