Tristia is an ocean city. Tristia used to thrive as a vital part of the maritime economy, and it was so beautiful that it was dubbed "marine jewels." That was, however, a long time ago. The city's initial radiance was snuffed out by the dragons' onslaught. Tristia's inhabitants fought hard to rebuild their city, but everything they tried went wrong, and the city remained barren instead. They requested Prospero Flanka, a Great Artisan, for the city's revival at the end of their hope. Prospero was a fabled inventor who resurrected towns that were otherwise doomed. The Great Artisan Prosper arrived at the city on the long-awaited day... It was only one female, though.