Military action
The Eurinidis/Gaenðidias on a quest to conquer the North had invaded the The Archipelago of Seasons. This 27 years after Oasi Dakded, a famed General and the Shogun had taken the throne, and though challenged with the Eurinidis/Gaenðidias technology was able to make a resistance and drown the ships with newly developed gunpowder technology.