Terra managed to regain control of his body at the last possible second. He saw Aqua struggling to get the both of them to safety, so he did what was best for the both of them; he let go of Aqua's glider.
"NO!" She cried out. She raced to catch him. When Aqua finally caught up with him, then the portal to the Realm of Light disappeared. "I'm so sorry, Ven. I guess I'm not going to be there after all." And with that, Aqua passed out.
Terra had no idea how long the two of them had been in the Realm of Darkness when Aqua woke up again.
"How long have I been asleep?" She asked once she was fully conscious. Terra shrugged.
"I don't know." He answered honestly. "Time doesn't exist in this realm."
When Aqua faced her demon clone the first time, Terra only then realized how much this realm was affecting her. "Your not weak, Aqua." He said comfortingly, as he embraced her tightly.
"Thank you."
When Sora finally rescued them, they headed straight back to Castle Oblivion and woke up a sleeping Ventus. "Terra! Aqua!" He exclaimed excitedly. "I knew you'd win against your Darkness, Terra!" Terra chuckled slightly.
"A little Darkness can't beat me." He boasted. Aqua smiled and Embraced Ven in a tight hug.
"How about we restore our home?" SHe asked the tow boys' nodded in agreement. The united trio restored Castle Oblivion back into The Land of Departure.
Disclaimer! I do not own KH... if I did, well, I wouldn't have to worry about getting a job...