Earth X

The story of Aero is about to end. Azief saw the changing of an era, of an epic story. Aero is still at the beach, looking at the distant horizon, feeling the wind and he is taking it all in.

He then looks at Amy, grips her hand tight and smiles and then he uses that device

The moment Aero uses that device, there is notification popping out and Azief knows that this is the moment

Like before, the notification asked if he wanted to go to the next dimensional travel and of course, Azief choose yes.

Azief could return back later to Earth Two to see the fate of Na Eun. But he also wanted to know what is the connection between him and Earth X.

Before, this desire of his was fueled only by his curiosity.

However, as he saw glimpses in his mind, there is something that he needed to confirm. 

Azief of course know that this might be a self-fulfilling prophecy the moment he decided to go to Earth X even after seeing the glimpse of the future.