Kai retracted both of his swords as he pulled the two spears on his back. The killing intent began emanating from his body as animal instinct took over him. He had experience in dealing with the intelligent magical beast, so it should be easy.

The soldiers somehow managed to catch up with him. Kai said, "Other soldiers will take care of the other magical beasts. I will handle that big mouse."

"Yes, Sir." Kai's killing intent and ferocious aura made the soldiers tense up and salute to him.

As the battle opener, Kai threw both of his spears toward the mouse.

The mouse simply snorted as it moved slightly to the right. It pushed the magical beasts underneath him and crashed one to death before looking at Kai as if it didn't feel a single thing. On the other hand, Kai's spears hit the wall and fell.

Ria had yet to use her magic because the mouse's attention wasn't fully yet on him. If she created a magic circle at this moment, the mouse would certainly charge at her.

Kai used the two spears to gather enough attention to cover the soldiers. This time, he took out his two swords again and leaped toward the mouse.

"Scree!"

The mouse roared as it slashed its claws toward Kai. Unfortunately, Kai already activated his Vibration Sword before leaping. The vibration might not be fully activated, but it already increased the sharpness by several levels.

Looking at the incoming claws, Kai simply shifted his body to the side and slashed his swords twice.

*Clang!* *Clang!*

The clicking sound of metal echoed inside the tunnel as if there were two metal clashing.

Kai continued flying toward the mouse after striking the claws. Looking at the size of this mouse, Kai was planning to slash one of its eyes at this charge alone. However, the mouse used its other hand to take him down.

*Clang!* *Clang!*

Kai struck the claws again, but this time a third of the claws fell. Kai's Vibration Sword was already at its maximum capacity and became capable of cutting hard claws like this. He still charged forward like a cannonball toward the mouse's head, but Kai suddenly clicked his tongue. "Tch!"

He raised his left hand to the side and created a green magic circle. From the sound alone, he realized that the other hand that he struck earlier had come back to slap him.

*Bam!*

The loud sound resounded across the room as if it slammed a brick wall. Even so, Kai furrowed his eyebrows as he felt the numbness on his hand.

The mouse didn't manage to break Kai's barrier, but it suddenly changed its movement. Instead of slapping Kai away, it was trying to push him against the wall.

They were fighting inside a quite spacious room since the mouse's size barely fit inside the tunnel. It would be advantageous if they fought this mouse inside a small tunnel since the mouse couldn't dodge them. However, they needed to kill it in one hit since the mouse was powerful enough to run them down. Even Kai didn't have confidence in stopping its charge.

Kai slowly pushed to the wall as the mouse pinned him down.

Ria noticed it was the time for her to make a move. She raised both of her hands as a green magic circle appeared beneath her feet. Another two magic circles flew out of this magic circle and stuck on her hands.

She pulled her right hand as if she was drawing a bow. A giant white sword slowly appeared between this magic circle and gradually expanded. She still needed to charge this power for a while to reach its maximum power.

On the other hand, Kai relied on his Oscillation Shield to prevent him from being squashed to death. He didn't have a panicked expression this whole time as it had yet to reach that step.

The mouse pushed a bit more, and the wall began to crack. Even though he was pinned on the wall, Kai still stood on his feet. He was challenging the gravity this whole time, and the force from the mouse let him do so.

Suddenly, Kai's Oscillation dissipated, and he jumped before the mouse squashed him. He landed on the mouse's hand before running through it with his sword cutting the mouse.

"Scree!"

The mouse screamed in pain as it reached Kai with its other hand. Unfortunately, it was also Kai's trap. As soon as it arrived, Kai jumped onto the other hand and cut it again like the first one.

This time, he continued toward its shoulder before arriving on its head. From this distance, he might be able to slash its eyes and penetrate the brain, killing the mouse before Ria finished preparing her attack.

However, the mouse suddenly turned around and opened its mouth. A blue light shone from the mouth.

"!!!" Kai raised his hand and created a magic circle. "Oscillation Shield."

The mouse shot out a laser beam from its mouth toward Kai but was still blocked by his shield. Even so, Kai couldn't move forward as the force behind this attack was stronger than he expected. He noticed it when he realized he got pushed back little by little.

He retracted one of his swords and took out one of the spears. If he threw the spear on its feet, the mouse might probably lose its balance and allow Kai to kill it. Yet, it would be dangerous since this attack might be redirected to other people in this room. So, he changed his strategy by stabbing the spear deep at the spot he stood.

As he predicted, the laser attack slightly disrupted a bit because of the pain. Using that advantage, Kai struck the spear with his sword, making the spear deeper. In fact, it somehow pierced through and fell to the ground.

Although he was still showered with attacks, he felt that the energy was a bit disrupted, and the force behind it grew weaker. He marched forward little by little, but the mouse made another sudden movement.

The mouse shook its body left and right, trying to get Kai out of his body.

"…" Kai furrowed his eyebrows and stuck on the mouse by hanging on the sword that he pierced on the mouse. Yet the mouse slapped Kai again. Kai was able to stop one of its hands, but the moment another one came to his way. He had no choice other than to let go.

His right hand was grabbing his sword while his left hand blocked the first hand. He had nothing to block the next hand, so he decided to let go and jump.

In mid-air, Kai couldn't dodge. This was the real purpose of the mouse. It might have gotten injured heavily by Kai, but it thought he could win as long as Kai died. The mouse opened its mouth again and shot out another attack.

"Oscillation Shield!"

Raising his shield once again, Kai managed to escape this attack unharmed. However, the continuity of this attack pushed him back against the wall.

*Bam!*

The mouse wasn't planning to let Kai go this time as it continued pinning him down until the shield break.

Sadly, the mouse didn't know that inside a tunnel below Kai, Ria had finished her preparation. She had been waiting for a long time since she noticed that the mouse had a speed to avoid Kai's strike. The moment the mouse had full attention on Kai and wouldn't have the time to react to her attack was the time she made a move.

Ria was still in the same position as if she pulled a bowstring. But she drew a huge sword instead of an arrow. This white sword had a four-meter length and made Ria look small. The width of this sword alone was half of her height.

She aimed the sword toward the spot below the neck, thinking it was the weakest point as it shot out that beam from its mouth.

"God Killing Arrow!"

The sword flew at high speed and created a giant hole without anyone noticing. Kai could hear her attacking, but this blinding light that pinned him down was too bright to allow him to see what just happened. And suddenly, the light dissipated as the mouse died and fell to the ground.

Kai didn't notice the wound on the mouse, but he saw a deep vertical hole on the wall behind the mouse. According to his ears, the attack managed to pierce fifty meters inside the wall.

"This is a limestone cave, right?" Kai couldn't help but ask himself. "Even Michelle can't create such a deep hole… As expected, she is a monster. Though it wouldn't be that useful in close combat because of the time she needed to charge that attack…"

"Knowing her personality, she might shoot it from afar and kill her enemy with this alone…" Kai answered the doubt in his heart.

He landed on the ground and turned to Ria while the latter smirked. "I win, boy."

"I don't have anything to let me move in the air. If I have one, the mouse won't be able to hold for a minute. Just wait until I finish my Sound Levitation technique." Kai snorted.

"You are just using an excuse. In the war, no one will wait for you to create magic to counter them." Ria shrugged.

"Do I look like a guy who will say that to my enemy?" Kai said with a poker face.

"No way. I will whack your butt if you do something so foolish. For example, I can whack your butt with some needles in my palm. Don't worry. You won't die since we will use the Simulation Room." Ria smiled evilly.

"I won't meet you again for the rest of my life if you do that." Kai rolled his eyes away. "Anyway, we need to move forward and pick up the pace again."

"Sure."