Arren was sleepy, and in the end, he couldn't help but succumb to it. Although it was truly ridiculous to be sleepy since he was already in the dream in the first place. However, considering that it was in an almost impossible vivid dream, it didn't seem too far-fetched either.
He wanted to say goodbye to the shadow, but he didn't manage to do so as he became unconscious in no time, and the next thing was that it was complete darkness.
All his senses came back, and Arren was certain that he was now awake and that once he opened his eyes, he would be able to see where he was. So he did open his eyes; he was concerned that his father and Spade were worried about him.
Although that was given, he also wanted to know what had happened to him, and he suddenly became dizzy. He didn't acquire some terminal illness again, did he?