After effortlessly slaying one Immortal-Class level Heavenly Winged Guardian, Cale did not stop moving. He teleported behind another one and nonchalantly slashed his sword.
"Slash! Puchi!" One more Heavenly Winged Guardian died under his sword and the whole process only happened for a little less than twenty seconds.
Aurora did not want to be outdone, she summoned a huge ice halberd and threw it towards one humanoid beast. The poor beast was impaled by the huge ice halberd and could only utter a desolate cry before it died.
The remaining Heavenly Winged Guardians were alarmed, but they were also angry after seeing the deaths of their brethren. They emitted a loud bestial roar that shook the entire cave before they dashed towards Cale and Aurora as if they had turned crazy.
Cale frowned after hearing their roar. He had a feeling that they had called for more backups. But he put it at the back of his mind. The more of them come, the more Holy Nourishing Crystal he can collect.
As if injected with stimulants, the Heavenly Winged Guardians attacked Cale and Aurora aggressively. They even disregarded their defenses and used all their strengths to hack Cale and Aurora.
Cale did not think too much about the change in their fighting style. The beasts were still too weak to put up a fight against him. With a casual sword strike, Cale beheaded another humanoid beast.
Blood splashed ceaselessly on the beast's headless corpse. Its huge body then dropped on the ground creating a huge crack.
Cale easily avoided the aggressive attacks of the remaining humanoid beasts. As for Aurora, no beasts could go near her. The Saint-Class level Heavenly Winged Guardians that came close to her had instantly turned into ice sculptures. Even the Immortal-Class level Heavenly Winged Guardians did not dare take her lightly.
"Bang!" Another huge humanoid beast carcass dropped on the ground. If one could see the aerial view inside the cave, they would see multiple craters down below. At the center of these craters were the carcasses of the dead Heavenly Winged Guardians.
Cale glanced at the dark region of the tunnel with a solemn, but excited look. He felt multiple strong auras speeding towards their direction. "It must be the backups that they had called earlier. This amount should be enough, and after killing them, we will go back to the Celestial Sword Empire. The beast tide is drawing near or those savage beasts might have already started their march. Aurora, don't hold back anymore. We need to finish things as quickly as possible."
Aurora sensed the urgency in his tone, so she nodded her head gently in response. "Yes, my lord." She knew that Cale was worried about Zero and the others who were still inside the capital city.
It was the first time she saw someone worried about his servants. Most of the lords did not have a trace of care towards their servants at all. Thus, she felt that Cale was different than them. They were not even worth mentioning compared to him. Of course, that was just her own thoughts and Cale was oblivious to it.
After a few seconds, they saw more than three dozens of Immortal-Class level Heavenly Winged Guardians. Each of them was gazing at them coldly as if Cale and Aurora were their archenemies.
Cale did not feel remorseful after killing countless humanoid beasts. He needed to swiftly enhance his strength in order to avoid the destruction of his birth planet, Earth.
In the world of cultivation, you will only become someone else's stepping stone if you are weak. So if you want to become stronger, then you have to do everything in your power to gain strength.
Of course, Cale would not allow himself to devolve into a killing machine who only knows how to kill. He will only kill if needed and avoid killing innocent people. That was his bottom line.
Cale calmed his heart before taking action. He did not want any mishap to happen no matter how weak the enemies were.
Cale with an unfazed expression brandished his sword. A gust of wind rose inside the cave throwing away all the weaker beasts. Even the Saint-Class level humanoid beasts were barely able to stand firmly on the ground.
"First movement, Roaring Dragon Slash!" Cale's veins protruded beneath his armor. He swiped his sword with all his strength using the first movement of the Devil Arcanum Sword Movement. It was the first time Cale used it, so he was a bit expectant about the results.
A huge black dragon phantom morphed into being after he slashed his sword. It emitted an earth-shattering roar that instilled fear to everyone inside the cave. Even Aurora was somewhat restrained by the power emitted by Cale's slash.
The huge black dragon phantom was even twice larger than the one produced by Duke Shutra during his fight with the top experts of the outside forces more than several dozen days ago.
The draconic roar it emitted stunned the Heavenly Winged Guardians.
The huge black dragon phantom was very life-like as if it was a real dragon of the legends. The huge dragon head opened its wide mouth revealing a set of saw-like teeth.
Eight Heavenly Winged Guardians at the Immortal realm were devoured without even being able to fight back. Eight shining crystals dropped on the ground following their deaths.
Cale was surprised to see the destructive power of the First Sword Movement of the Devil Arcanum Sword Movement. Although he had already prepared his heart, he was still shocked at the scene in front of him. The attack he released was even stronger than the one produced by Celestial Sword Empire's strongest duke.
"So this is the real power of the Devil Arcanum Sword Movement. Just what kind of sick sword skill did Asteria sold to me?" Cale muttered to himself.