Harena, pl. hareni
Officially, the hareni don’t exist.
Reliable rumour, however, indicates that there’s at least a few hareni on most Bases.
There have been hareni at least as long as there have been Cortii, maybe even longer. The word ‘harena’, in modern Cortiian, has some nasty connotations built in, but historically the meaning was very similar to ‘berserker’, and was used to refer to the best fighters, the ones that threw themselves into the front line of a fight.
Like any unofficial group on a Cortiian Base, they’re extremely secretive. Membership is invitation-only, and the only qualification for staying a harena is ability to stay alive. The hareni allow any training level to join, which makes it a risky gamble for junior deriani. Those that do survive, through luck or fighting ability, have the advantage of training with some of the best fighters on a Base at any rank, and exposure to a diverse range of fighting styles and techniques.
While the hareni are primarily infamous as a fighting group, and the majority seem to have a strong focus on fight skills, they’re also the Cortiian equivalent of gremlins, frequently blamed (or praised) for the more unexplainable casualties.
Although time in the hareni can be considered worth the risks, there’s also the point that discovery is a guarantee of a slow and messy death at the hands of the akrushkari. The Councils of the magaii do not tolerate disobedience. The hareni are also, by best accounts, a set of violent mavericks and thrill-seekers. Some of their reputation, according to solid Base rumour, is absolutely honestly come by.
On Corina Base, because Khyria got sucked into the hareni before even achieving full rank, there are several hareni whose names show up regularly: Khyria, of course, but also Ashan Maklin, Evor Leistor, and later on, Tayin Vern. They make up an over-powered set of powerful allies and enemies, or occasionally heavily-armed neutrals, depending largely on context and the mathematics of personal profit and loss.