However, no one had expected that the last one to survive would be the priest pala who had taken down the notes. He had also been contaminated by the dark force and turned into an undead creature in the darkness.
Perhaps it was because his will was the strongest, so after he 'died', he absorbed the most power of darkness and became the most powerful existence here.
If it was given more time, it might be able to absorb the dark energy here and advance again, becoming a huge obstacle to the six Holy disciples.