Among the many things Vaan learned from the Myriad Sea God Palace's grand libraries, he found a particular method that seemed rather useful for the development of Pangea and Gehenna.
It was a type of Realm Fusion Method called the Dimensional Overlay Fusion.
This Realm Fusion Method required the extraction of Realm Essence from other realms, fusing them into one's own realm's Realm Essence.
Once this step was achieved, the other realms would be drawn to one's home realm, superimpose, and assimilate, becoming one larger grand realm with a higher life value and potential.
Such a grand realm would become capable of nurturing higher life forms.
Naturally, other types of Realm Fusion Methods existed.
However, Vaan specifically focused on the Dimensional Overlay Fusion due to the current relationship between Pangea and Gehenna. Their relationship was quite similar to the Dimensional Overlay Fusion.
