King Alphonse!

25 years ago in Atlantis, 

Above the Southwestern Ocean, the surface of the ocean was boiling as two opposing auras fought violently above it. Dark and blue streaks of light moved past each other, tangling and disentangling. 

Boom!

When they collided with each other, loud explosions could be heard from miles away. 

"What the f*ck are these things?!" a wounded middle-aged man who was holding a spear roared as he unleashed dozens of water arrows at the group of black shadows that was in front of him. He was out exploring with a friend from a foreign world when they were hunted by these black shadows. 

He had never seen them before, and he had definitely never seen their powers before. It was creepy. Whatever he threw at them, they threw back at him in some sort of black shadow-like attack. Like how he could make water arrows be solid enough to pierce through one's body, the enemies could copy his attack and return it in the shadow form.