After returning to the Floor of Asgard, and talking to his uncle, Morgan, William found out that the majority of the people in Lont had successfully migrated to the Floor of Asgard with the help of the Bifrost Bridge.
Jekyll was the only one that remained in Lont to look after the residents who were still in the process of preparing for their relocation.
After the war in the Southern Continent, James had taken the orphans of the Hellan Kingdom back to Lont in order to give them a safe place to stay.
After William had conquered the Floor of Asgard, the original inhabitants of Lont migrated at James' recommendation. Others stayed to look after the orphans who had just started to adapt to the countryside's way of living.
However, since the threat of a grand-scale war, that could potentially impact the entirety of the world, was about to take place, James had returned to the Floor of Asgard to make the migration to the Floor of Asgard a compulsory one.