Alchemi

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Alchemi is an island of iron and steel production which the world became unable to locate 200 years ago. It is Olga's birthplace.

History
Sometime before 200 years ago, the people of Alchemi created a metal known as Pure Gold, which is said to be worth so much it can buy the entire world.

200 years ago, public knowledge on the island's location was lost, leading to the island being labeled as disappeared.

Sometime close to the present, Olga managed to escape from Alchemi.