Shuuen is a founding member state of Sokoku, as such a continuation of a former colony of Helreich under the name of Schangtienrand. Due to its relatively central position within Sokoku and history as founding member state of the federative republic, Sokoku's capital Kyusigai is located here.
The state consists of a main island with the same name and several dozens of smaller islands surrounding it. However, the island group of Askers north of Shuuen is part of the state of Mirei instead.
Culturally speaking, Shuuen belongs more to the realm of Radhria (Nelyasyat and Ayatawanti) sharing a Hueiwei ethnicity and local languages belonging to the Bawanesi language family, apart from the northern coast where Izto cultures related to the Altaian mainland are dominant.