Tristia of the Deep-Blue Sea [OVA]

An ocean city, Tristia.

Tristia used to be prospering city, playing an important role of the maritime trade, and it was as beautiful as it was called the “marine jewelry”. However, that was a long time ago. The attack of the dragons deprived the city of their original brightness. The people in Tristia worked hard to reconstruct their city, but everything they did went wrong, and the city became desolated.

For their last restort they asked a Great Artisan, Prospero Flanka to help rebuild the city, he was legendary inventor and he had revived cities where they were going to be forgotten. The long-awaited day came when the Great Artisan Prosper arrived in the city. However, it was only one girl who stood at the port of the city. Prospero sent his grand daughter, Nanoka, instead of him.