Etherlink is an arcane spell that infuses extremely powerful people with runes. The person, when it's cast, will fuse with the runes empowering the one whom they're linked with whatever remains of their willpower. The magic is first introduced by Ethelberd, after declaring war on the World Government. But a legend suggests it was when the 'Four Ether Children' had reached such a high willpower it surpassed the very limits of humankind and was so much that these four children, together, were almost able to surpass the Divine Dragon, Kalos. Ethelberd - Crowe Haven Ventus - Helena Haven