Isissan
Isissan is a term that appears in multiple, distinct contexts but does not correspond to a single, widely recognized subject in major reference works. In fiction, Isissan has been used as the name of cities, regions, or factions in various works, with details that differ from one source to another. Because these uses are localized to particular narratives, there is no universal canon for Isissan across all media.
In real-world geography and onomastics, there is no internationally recognized country, province, or municipality named Isissan.
The etymology of Isissan remains unclear. It may reflect transliteration from non-Latin scripts, a coined name
If you intended a specific Isissan—for example, a character, a geographic location in a particular work, or