Winter this year was especially harsh for the people in the Holy Achate. After the Beast King came and defeated Nami, Queen of the North Sea, the trade and travel ban inside Holy Achate was imposed, and nobody could enter or leave the kingdom.
They also weren't allowed to trade from the west road or the North Sea. Whenever they set up a trading ship to cross the North Sea to the neighboring continent, Nami would always send a huge wave that completely washed the ship back to the port. In some extreme cases, the ship could even be destroyed and become a shipwreck.
At first, the people in Holy Achate didn't know what they did wrong until the Beast King made such a ridiculous ban that would starve them to death before the winter ended.
But the news traveled fast, and it didn't take long for everyone to know that Queen Anastasia and Princess Aria had done something to offend the Beast King, hence putting the fate of the entire Holy Achate in jeopardy.