Tyrisei

Tyrisei is the second and smallest planet within the Corona planetary system. A small and rocky mercurian planet with vast mineral deposits, its well known for being the only planet under the mysterious Triumvirate's control and for having the last remaining Ark ship, Iosai station, in its orbit.

The planet itself has hardly been settled due to the high amount of radiation that comes from Corona. Most of the Syniu population reside within Iosai station, an Ark turned orbital habitat that hosts most of the Syniu goverment, economy and military.

The Syniu used to have dominance over the Corona system, having plenty of outposts in cross all planets. After the interplanetary war, however, they were nearly wiped out in all places but their home planet