What was real darkness? If someone asked Seth that question before the events that happened today, he would certainly smugly show his pure dark element and tell that person he or she was actually seeing what was the true definition of darkness. However, only now, he was able to realize how wrong he was.
Seth felt like he had been swallowed by a black hole. Other than feeling Lan Xue's body that he was embracing tighter than ever; he wasn't able to feel anything else. His sense of vision was thoroughly useless and even his Soul Sense and energy scan were being suppressed so hard, that he couldn't sense anything at all, not even if there was an elephant right in front of him. Inside that dark environment he wouldn't be able to see or sense it at all.