Aoi Umi no Tristia

The ocean city of Tristia was once a thriving hub of maritime trade, renowned for a beauty so radiant it was celebrated as the "marine jewelry." However, those golden days are long past. Following a devastating dragon attack, the city was stripped of its former glory. Despite the tireless efforts of the citizens to rebuild, every attempt failed, leaving Tristia in an even deeper state of ruin and despair. With all hope fading, the desperate inhabitants turned to the legendary artisan and inventor Prospero Flanka, famed for reviving cities on the brink of collapse. Yet, when the long-anticipated day of his arrival finally dawned, the people gathered at the port found only a solitary young girl standing before them. In his place, the master craftsman had sent his granddaughter, Nanoka.