"Wow, more void stones, huh?" Kent smiled, looking into the 4th temple master's pouch.
He pulled out five void stones, each filled with so much void energy. It was clear he was happier looking into this pouch than he was after killing the third temple master.
While this guy nearly forced him into an extended battle, he also allowed him to see the nature, strength, and limitations of his [Underworld Soul River].
Kent was already aware that the Underworld Soul River was a dangerous technique. He knew it would grow stronger the more he used it.
Whenever a person dies within, their resentment is absorbed, strengthening it. So, in reality, the more he uses it, the more devastating it becomes, and the more it consumes also.
Of course, with Kent having more soul essence than he could use, he wouldn't have to worry about running out of energy. The limitation comes in when the pressure starts mounting on his soul.
