The Truth of Never Being Able to Kill the Enemy

"What the hell is Sain Underground City doing?!"

Enhanced Black Knights were one thing. Those powerful elite monsters certainly had the potential to be strengthened.

But what was with these ghosts?!

Why couldn't even blade aura harm them? The sharp aura passed through their bodies like a breeze brushing over a mountainside, without stirring the slightest ripple.

It was as though they existed in entirely different dimensions.

First the hollows, and now ghosts. Did monsters this low-level really have any potential to be strengthened?

Still, it had to be said—this was truly unexpected.

"Brother, use magic," Anleisi reminded him.

Kaius's lips twitched, and confusion showed in his eyes.

Because he had already used it.

Of course, he knew that undead were best dealt with using magical attacks, so the blade aura he had released earlier had already contained pure, attribute-less mana to enhance its destructive power.

Yet even the mana-enhanced blade aura had passed straight through the ghosts, leaving their bodies seemingly unscathed.

No, perhaps they weren't entirely unscathed. Maybe the damage was simply too slight for me to notice?

Kaius frowned more deeply. With several swishes, he slashed out again. This time, he used no mana at all—only weapon strikes enhanced by battle aura.

As expected, the attacks passed directly through the ghosts' bodies. The sensation traveling up the blade was that of cutting nothing but air.

"What?"

The scene before him finally drew a puzzled sound from Kaius.

Since when had ghosts, such low-level undead creatures, learned an absurd ability like immunity to physical attacks?

Holy Light coiled around his katana. As he nimbly dodged the ghosts' attacks, he rapidly swung his blade, unleashing a storm of Holy Light blade aura. This was a Battle Skill with high-tier destructive power.

The attack successfully tore apart two approaching ghosts!