"Destiny granted him a remarkable opportunity, obviously meant for him to achieve glory on the battlefield. Yet, he ended up slaying women, children, and innocent villagers, turning himself into nothing more than a living bandit. Although he's got the nickname 'Contest Killing God,' in the end, he's just a bandit."
Chen Ku marveled at the wonders of the Killing Heart Method.
It was clearly a kind of 'mental state' that could allow him to maintain a peak condition on the battlefield, much like when Chen Ku previously charged through the first level of the Evil Summoning Banner, where he slaughtered four to five hundred demons but could kill no more.
It wasn't just because his qi power was exhausted, making it hard to breathe; there were also issues with his mental state, a certain numbness and fatigue.
However, if he adopted the mental state under this 'Killing Heart Method.'
