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.

The collapse of the Front and the "Island plan"
The groups initial strategy was to annex various islands in the Phagosian sea to form a base to raid centaris. They planned to use diplomacy force and bribes to unite the islands under their rule. They pland to be quick and quite as most of these islands had ties to big powers who Synadenos did not want to provoke. The key members that implimented this plan were Ausonicis who was the defacto leader   Corren Tizoc and Froby who headed diplomatic efforts to get the nation recognized and  Alexander  who developed the culture of the region. The diplomatic front saw great success with Synadenos becoming a vassal of  Hillarriia and gaining recognition as a nation. In addition the nation was allowed to join the Jade alliance which consisted of the Federation of Yvres  The Kingdom of Lenoria   Syndenoes and several others. Unfortunately among those who initially joined was Dectric  the Mahui Spy from the HRF who remained with the group and like Azepus  had done regularly reported the islands plans to Centaris to ensure that they would not make another attempt on centaris. Unfortunately the one of the islands was Mahui itself and as such Dectric reported this to Casual the then leader of Centaris who threatened war on the nation forcing it to disband.