Byung lost consciousness shortly after their silent exchange, his body simply giving out despite his will to remain alert and aware of the danger before him. The wounds he had incurred from the three-headed dog were more severe than he had initially realized—internal bleeding, multiple fractured ribs, organ damage that his body was struggling to repair even with his enhanced physiology.
But it shouldn't have been enough to knock him unconscious this quickly. He was more resilient than most, built to endure punishment that would kill lesser creatures. Which would mean it must be the elf's doing—some magic she'd employed to force his body into shutdown, to render him helpless while she did... whatever she planned to do.
