Onigashima

Onigashima was an island off the southern coast of Jakoku and a major hub for trade with the Evillious region. It played a prominent role in Jakoku's history, and became a significant location during the nation's civil war and western outreach.

Early History
At some point, the island became a part of Jakoku, having a single harbor with the town of Enbizaka being founded in its center. After the island nation declared an isolationist policy, Onigashima remained the only location that tolerated foreigners, later becoming a haven for immigrants from the Evillious region. During the EC 130s, trade between Asmodean and Jakoku flourished. During the EC 540s, Chartette Langley settled in the region, gaining fame as a blacksmith.

Jakoku Civil War
Following the end of the civil war, Gaou Octo was promoted to magistrate of the region, later sealing the Twin Blades of Levianta in a cave in Izasa Mount. Following Gaou's rule, the Octo Family continued to rule over the region as magistrates for centuries.

Western Outreach
After Jakoku was forced to open its ports to foreigners, both local and foreign businesses set up shops in the island. In EC 838, a fire ravaged Enbizaka, wiping out a large part of Onigashima's population and architecture. By EC 842, efforts to rebuild the town were made by the Freezis Foundation. Later that year, the island's population was thrown into a panic following the Enbizaka Murders perpetrated by Kayo Sudou.

Enbizaka
A city in the middle of the island, located along the hill slopes. It became a hub for trade during the EC 800s, and contained numerous shops and firm branches. It was the site of the Enbizaka Murders.'' Main Article: Enbizaka''

Izasa Mount
A volcano located north of Enbizaka. It had at least one cave.

Harbor
A port for ships. It mainly accepted merchant ships from foreign countries.

Conceptualization and Origin

 * Onigashima is the name of a mythological Japanese island where oni, the Japanese equivalent of demons or ogres, reside.
 * In a livestream, mothy stated that Enbizaka is inspired by Dejima, an artificial bay built by merchants that served as the single trade hub for Japan and other countries during the Edo period.
 * The name of Izasa Mount appears in Takemikazuchi, the legend of the Japanese thunder god.
 * Jakoku, where Onigashima is located, is fittingly inspired by Japan.