Demon Kings were nearly immortal beings; they weren’t completely immortal, but they didn’t die easily either. They would survive numerous killings. Moreover, physical attacks hardly affected them. Even Molon, with his brute strength, couldn't directly impact the soul of the Demon Kings by merely smashing their heads since they possessed a near-infinite pool of dark power and a similarly powerful soul.1

To kill, or rather, obliterate a Demon King, it required an attack that directly damaged their soul. The most fitting method was to purify them with divine power. Alternatively, it was also possible to cut through the dark power and the soul of Demon Kings with an even more powerful attack, like one from the Moonlight Sword. Though slightly less efficient, it was also possible to damage Demon Kings with high-level magic that could affect the dark power of the Demon Kings or cut them down with sword-force.0

It was possible to kill a Demon King with any of these methods as long as they were persistently applied. However, unlike humans, it was difficult to discern when a Demon King was going to die, even as they neared death.0

There were still signs that betrayed a Demon King’s weakening, including a weakening flow of dark power, the shift from aggressive to defensive tactics, emotional overdrive, or, conversely, excessive calmness. Such signs were helpful in gauging how close a Demon King was to death.1

Eugene had employed such methods when fighting Demon Kings three centuries ago.0

But it was different now. His eyes were imbued with divinity, and he could clearly see the...1