Adrien had completely taken over the world.
After swallowing the entire Dragon Empire, he proceeded to assault the other Continents, proclaiming war on every single existence with his incredible power. In order to avoid utter extinction, the survivors of each race found solace in the Fairy World.
"I had to increase the space of this world in order to occupy everyone, while your servant… Ater… he was able to coordinate the entire transfer, making sure we had a sustainable ecosystem by the time everyone settled in."
Rey smiled once he heard this.
'Ater keeps amazing me.' He thought. 'He gathered everyone together and managed to create a stable environment for them to thrive pending my return.'
"With all the pieces now ready, the time has come for a counterattack."
Rey agreed with the Fairy King.