Synadenos

the Grand Duchy of Synadeneos was an artificial island nation in the Phagosian Sea, founded by Ausonicis following the failure of the HRF.

In the HRF
The core of Synadenos was formed within the HRF, originally as a front militia known as the "Snake Legion", known only to a very few members and unknown even to Vansh himself. Legion recruitments also happened outside the Front, masquerading as a group of Bandits who had the intention, as a first major blow, to sack several cities of Centaris, making the task easier at the Front.

Some members of the front joined at the invitation of Ausonicis, among them the sons of Vansh, Corren and Jaenera. Ausonicis' adopted son Alexander Tiberius was also a member.