The two fighters looked at each other while trying to measure the other's strength. It was clear that both would use most of their power in the next exchanges, so neither wanted to commit a mistake that would cost their lives.

Grabbing the weapon with his right hand, Kerah saw his blade coated with a dense layer of corruption. At the same time, on his left palm appeared a small black flame before he closed his hand, extinguishing it.

At the same time, while Eisen's eyes had begun to shine with crimson light, his katana was doing the same.

Not only that, but Kerah could sense a feeling of danger coming from his enemy's weapon.

It was clear that he would end up pretty badly if Eisen managed to land a hit on him. Because of this, Kerah decided to take the initiative and attack his enemy.

After dashing forward, he slashed three times toward the armored man, who gently parried each of the attacks. Seeing his offensive fail, Kerah opened his left hand, making a black flare appear from it and fly toward Eisen.

Finding himself in danger, Eisen bit his own lips until blood flowed out of the wound. In less than a second, enough blood to bleed out a grown man came out of his body to create a shield that protected him from Kerah's flames. After the fire was extinguished, the blood flowed back into Eisen's body as if nothing had happened.

Seeing that, Kerah couldn't help but drop his maw.

'What the hell is this guy? And why is it so difficult to kill?' Kerah thought. 'I'm going to need to neutralize his regenerative and defensive capacities somehow if I want to win this fight.'

But before he could do anything, Eisen began to attack him with all his might. Swing after swing, he forced Kerah to evade each of his attacks, not letting him take the initiative again.

The battle continued like that for the next few minutes before Eisen finally managed to make a small cut on Kerah's arm. Even though it wasn't too deep, blood with purple tones flowed out of it at high speed.

With each second, Kerah's face became paler because of the blood loss, while at the same time, Eisen's looked even better than before they started fighting.

But there was something that looked weird to Eisen, and it was Kerah's smile. For some reason, his enemy had a smile on his face since he managed to cut his arm.

"What makes you so happy? Could it be that you have finally accepted death?" Eisen asked with a smile.

After hearing that, Kerah couldn't help but burst into laughter.

"Haven't you realized it yet? I have polluted my blood. You are fucking killing yourself by absorbing it." Kerah said before snapping his fingers.

As if reacting to that sign, Kerah's blood turned completely purple, even the one Eisen had already absorbed into his body, making his veins change color.

When this happened, Eisen began to scream in pain.

"You thought you could steal from me, but that will end up being your final mistake!" he shouted as he began to hit him with his weapon.

Swing after swing, Kerah began to wound his enemy with each of his movements while taking advantage of his condition.

Eisen did his best to recover and heal from his injuries, but each time he tried, the corruption inside his blood activated, dealing even more damage to his body.

Suddenly, he found himself completely outmatched by his rival.

One more time, Kerah opened his left hand, and a black flare erupted from it. The flames burned into Eisen's flesh as he couldn't summon his blood shield again.

When he was not much more than a burned corpse, Kerah used his blade to chop off his enemy's head, finishing the battle immediately.

He looked around the blue tunnel, and after identifying a pool of his enemy's blood on the floor, he knelt close to it and soaked his hand in it. With his hand covered in red, he drew a symbol on the ground before cutting his own hand to let his blood mix with the one on the floor.

"This offering is for you, oh mighty lord," he murmured as purple light began to emanate from the symbol.