Night Fury

Even though Lucas only touched the barrier for a moment, he could tell that the barrier was strong and destroying it would definitely wake the rank 4 Night Cerbeus up from its sleep.

If it wakes up, then the assassination would become difficult and there would be definitely not enough time for him to search for a good rank 4 spirit beast to assassinate.

'No wonder, this spirit beast was in a deep sleep because of the barrier.'

Lucas scoffed at the Night Cerberus and finally understood why the rank 4 Night Cerberus in front of him was sleeping without a care in the world.

'Wait a second.'

Suddenly, Lucas thought of something as he looked at the faint shadow of the Night Cerberus on the ground.

Since the cave had dim light because of the light passing through the small cracks on the grounds, Lucas could see the faint shadow as he thought of something.