The pain center of the human brain was also in control of negative emotions such as fear, depression and sadness. Negative emotions could be considered a sort of mental pain. The principle of the Eyes of Yama was to stimulate the pain center of the brain and cause deep fear.

But the Tyrant Tiger couldn't feel pain, so he was missing those emotions as well. No wonder he was so ruthless.

The Wolf King froze, "What’re the Eyes of Yama?"

"Nothing,” I prevaricated.

Right then, a thud sounded, as if something had been thrown onto the floor. As soon as I turned around, I was greeted by a small metal can spewing out smoke that was stifling when inhaled. The Wolf King signalled us to the other side of the floor.

Right then, a flurry of footsteps came from within the smok...