Drakon of The Seven Armies – Chapter 3226

"Argh! Isaac, you will never have peace!" Within the Soul Purifying Flask, Shawn's spirit cried out in agony.

However, Isaac neither wanted to hear nor could hear those words, as he was isolated by the bottle.

Interesting, the Principles of Internal Demon has many connections with psychology on Earth.

Internal Demon refers to psychological issues. Once you have a better worldview and a more objective perspective, the Internal Demon naturally disappears....

After some time, Isaac experienced a moment of clarity. He felt that his understanding of the Principles of the Internal Demon had become more profound.