Kai and the others were chatting in their room. After that mission, Michelle got $250,000 and 2,000 points as the original reward for killing the wolf, including the giant crystal.

They also managed to help the Left Army and Middle Army with minimum casualties. Even the army and the student president personally gave their thanks. Of course, the student council rewarded them greatly for the emergency mission.

They got $300,000 and 10,000 points. Kai decided to use that money to buy all the equipment they needed. They would be able to buy them easily by using Michelle's or Ayaka's money, but they agreed to not involve their families in this.

The rest of the money would be split to five, as one-fifth of them would be the group's cash.

They were waiting for another high-level mission to get a big reward like this one, albeit it was hard to find them. Two days later, Michelle asked him to go to their base first as she had something to do.

Tasha and Ayaka, who had been waiting for them, were surprised. Tasha asked, "Where is she?"

"I don't know. She has something to do." Kai replied, looking at Ayaka's device. "Do you research another thing?"

"Yes." She nodded.

Before he could ask the details, Michelle opened the door, bringing two briefcases with her. She placed the two briefcases and smiled. "Finally, these two have arrived."

"What is in these two cases?" Kai asked.

"You won't believe it." She smirked as she opened the first briefcase, letting them see two blades' handle devices. "This is your weapon, Kai."

"?!" Ayaka's heart skipped a beat after hearing Kai's weapons. His current weapons were the two swords that she gave him a few months ago. Although she wanted Kai to use her weapons, she did not stop Kai from changing his weapons. She took a glimpse at the device.

It was a blue metallic sword's handle with a strange white pattern.

Kai grabbed one of them, activating it by channeling his magic power. The real blade that had been hiding inside the handle came out, revealing a one-meter long blue sword.

"The concept is to make a coupling between the handle and the blade, enabling the blade to vibrate without affecting the handle. It will be funny if you start vibrating because of this sword. Well, to solve that issue, we put a coupling and a few shock dampeners." Michelle chuckled, explaining the system. "How about you test it first? You have researched magic for this in the past, right?"

"Yeah." Kai nodded, looking at Tasha and Ayaka before making a bit of distance. He closed his eyes and took a deep breath before making a small magic circle on the sword.

The magic circle was a bit different as Kai made a magic circle that looked like a ring, rotating around the blade.

The magic circle made a weird sound for a second before it stopped. The energy from the sound then transmitted to the sword, making the sword vibrate. The vibration started slowly before picking up speed bit by bit until it finally became a high-speed vibration.

"So, this is a vibration sword… The concept of this is to make a high-speed vibration, thus increasing its sharpness." Michelle said as she threw a briefcase to him. "Test cutting this."

Kai raised his sword, trying to cut the briefcase. However, he felt something wrong as the vibration suddenly stopped mid-air. Because of that, the sword could not cut the briefcase, deflecting it to the ground.

"!!!" Michelle, Tasha, and Ayaka widened their eyes, seeing the same thing as Kai. Michelle asked, "Why is the vibration stopped?"

"..." Kai closed his eyes, analyzing what just happened in those few seconds. After a minute, he answered. "It seems because of my magic."

"Your magic?" Michelle looked down, weighing something in her mind. On the other hand, Ayaka could not hold her curiosity, considering this was the first time she saw Kai researching magic. "What is the concept of this magic?"

"It is about Soundproofing ability. Soundproofing works in one of four ways. One is to block the noise by adding mass to a structure to the point that sound energy is reflected or converted into heat by the mass of the new structure. The second is to add another layer, stopping the sound vibration from traveling through to the second structure.

"The third is sound absorption, which is when sound is absorbed by a material, therefore reducing the amount of sound that travels through a structure. I use this concept for my Sound Insulation Room. Meanwhile, I use the first way for this magic.

"You may notice it by seeing the ring magic circle. I use that magic circle to make a space that could completely reflect the sound, making the particles collide with each other continuously, thus increasing the kinetic energy.

"However, the moment I swung the sword, the vector changed, leaving the magic circle," Kai explained, wondering why he did not think about this.

The otter three nodded, understanding his concepts, albeit understanding and using it to make new magic was different.

Michelle said, not having any expectations. "How about making a sphere magic circle? This way, the particles won't escape."

He shook his head. "The main thing in this magic is not the particles but the kinetic energy. If I make it that way, the energy might escape through the little gap around the sword, thus giving me a hard time maintaining the magic."

"Then, how about changing the shape of the sword? I think you can make a metallic sphere in the blade. That way, you can reinforce it with magic so the sound couldn't escape." As expected from Kudo Group, who was in charge of making and researching weapons in United Japan, Ayaka suddenly gave a reasonable solution.

"..." The others could somehow picture the sword. As long as Kai did not mind about the shape, it should be no problem. Kai glanced at Michelle, asking for her opinion.

"I can ask the professor for this. She should have a few experts in this area, but… you need to wait again." Michelle answered.

"I don't mind about waiting."

"Well, she might work extra fast if you are the one who comes to her…" Michelle said, making a smug face.

Kai's body shook as he immediately shook his head repeatedly. "I won't."

"She is nice, you know, as long as you can ignore her habit. Besides, she truly cares about you since you are her first…" Michelle suddenly stopped, forgetting that Ayaka was here. She did not know about Zodiacs yet, so she would hide it until Kai told her… Albeit, she stopped at the perfect time, making Ayaka misunderstand.

"First…" Ayaka shuddered, looking at Kai with complicated expressions.

"Gahaha…" Michelle laughed. "It's not what you are thinking. Anyway, I will send the weapons back along with the request."

"Thank you." Kai nodded. Remembering the briefcase, Kai asked, "What is in the second case?"

"This is for you too… but with Tasha." Michelle answered.

"You mean…" Tasha and Kai instantly realized what was inside the second briefcase.

Michelle opened it, revealing a pair of bracelets. The bracelets were white without any decorations. "The concept about this bracelet is by syncing magic frequency. Normally, this would be impossible since every person has a different magic frequency. Your case is possible because the magic power inside Tasha's body is yours.

"Actually, the professor could think of something like this because of both of you. The first one is because you have Sound Magic and she is a bit interested in frequency and such. The second one is Tasha's sealing ability.

"Combining these two concepts, she managed to make something like this. Of course, there are many complicated things I can't explain since I don't understand any of them. Anyway, you can try it." Michelle handed the bracelets to Kai and Tasha.

They exchanged looks before wearing the bracelets together. Tasha's bracelet suddenly made a blue magic circle.

Tasha felt her magic power was drained a bit, making her a bit uncomfortable. At this time, Kai's bracelet made another blue magic circle, appearing to be the receiver. It took only three seconds before the warmth spread from his hand to his entire body.

This was his magic power, he thought.

"How is it?" Michelle asked, opening up a report sheet to send back to the professor.

"I could not say the exact number, but I feel I have received more than ten percent of my original magic power. At first, it is a bit uncomfortable and there is still a stingy pain in my arm. It should be gone after a few minutes."

"Yes. I have the same feeling as Kai."

Michelle nodded, taking notes for the professor. "The professor wants me to check you for a few days. If you still feel uncomfortable after an hour, it will be better to take it off for the time being.

"If there is another symptom, you might want to check your condition with the professor."

"..." Kai did not want to meet the professor but still nodded his head with great difficulty. Tasha did not mind though, considering Kai would be the center of her attention.

"Well, If I have this magic power, I can make another magic…" Kai said.

"Oh, new magic? What is the type? Attack, Support, Scouting?"

"Attack Type." Kai pondered for a moment before replying.

"What is the concept?" She asked, but before Kai could answer, someone opened the door and shouted.

"Haha… I have come to challenge your group, Lion Group. To think that you use Leo to be the symbol, as expected of my rival, Shadow Queen, Michelle."