The Power Is Mine?

"What do you mean?" Gustav asked while squinting his eyes.

("It called you master because it was initially a part of you... Cohilia was using your power,") The system added.

"What? It was using my power? I don't understand how that is even possible, none of all these makes any sense," Gustav said with a slightly confused expression.

("The items scattered across the universe that the time candidate is supposed to help you find are actually items belonging to the Outworldly... A part of his power... Your power... Cohilia is one of the items and it came looking for you by itself,") The system explained.

("I wasn't supposed to reveal this to you but since you already acquired one of them, I guess there is no problem in telling you. Although it was unexpected that one of them was on earth,") The system added.

"So that means the power is mine..? How is it that I can't use it then?" Gustav asked.