Open the door, there is another world

So Li Qing and Lala left the city that never sleeps.

Although there may be ghosts hiding here, they are not easy to find. Moreover, Muzan Kimuji does not allow ghosts to gather together. Since Muzan Kimuji himself is already here, there should be no other ghosts here. Even if there are, they are under the close control of Muzan Kimuji. Therefore, looking for ghosts here will alert the enemy. So Li Qing and Lala decided to go find Kanae Kocho. Kanae Kocho had received a mission before, so they will definitely be able to find the ghost by going to her.

Li Qing had also left a mark on Butterfly Kanae before, so now he can directly open a portal to teleport there.

So after a portal, Li Qing and Lala came to Butterfly Kanae.

Butterfly Kanae was in a small town at this time. The town was very quiet in the dark night. There were no lights on in the houses because this was a rural area. Kerosene was very expensive in such a place, so of course they would not light it up at night. There were also no entertainment activities at night, so the people living in such a town worked from sunrise to sunset. Now was the time to rest, so it was very quiet here.

Butterfly Kanae was on the roof of a house in the town. She was hiding there, using her sensitivity to ghosts to detect the total number of hidden ghosts.

Kanae Kocho has been a member of the Demon Slayer Corps for a long time and has killed more than a dozen demons, so she is very sensitive to the breath of demons. Basically all members of the Demon Slayer Corps have this intuition, and the Pillars have even stronger intuition in this regard, and of course Kanae Kocho is the same.

She was now searching for the presence of ghosts based on her intuition, and suddenly she found swirling sparks around her.

She thought it was a ghost hiding here who was taking action, so she had drawn her long sword and was watching the formation of the sparks with a wary look. She watched the sparks become a circle, revealing a scene that was not this town, and then two figures walked out from it. Kocho Kanae originally wanted to chop them with a knife, but she suddenly found that the people walking over were Li Qing and Lala, so her wariness disappeared, but her expression was still a little strange.

It’s strange to know the principle and function of the portal formed by the sparks, and also the reason why Li Qing and Lala came here.

"Why are you here?" she asked curiously.

Li Qing did not answer but asked: "Did you encounter a ghost?"

Butterfly Kanae was curious, but still answered: "We are investigating, but there is no doubt that there are traces of ghosts here."

"Don't kill him if you meet him. It's useful to catch him," said Li Qing.

Butterfly Chane was even more confused, but finally nodded: "Okay."

Lala didn't say anything, but she was always looking around, sensing the evil aura she had sensed before. She felt that there was a faint breath of panic permeating the space above this small country town. The people here seemed to be afraid of something, probably the hiding ghost. So now she was sensing the source of this aura. Li Qing and Butterfly Kanae looked at Lala. Butterfly Kanae didn't know what Lala was doing, but she felt Lala's seriousness. Li Qing felt that Lala's mental power was spreading in all directions, as if searching for something.

Li Qing suddenly realized where Lala's perception came from. It turned out to be the effect of mental power.

So he did the same thing and released his mental power. After meditation and the tempering and nourishment of magic, his mental power had reached a very powerful level, so he covered the town easily. Mental power is invisible and intangible, so it cannot be blocked by anything. So Li Qing searched the town quickly and found nothing unusual. Then his mental power spread towards the underground, and he found a space here.

The space was filled with black mud, and Li Qing sensed an evil shadow in it.

"Found it." He opened his eyes.

Lala blinked her eyes, glanced at Li Qing and said, "I sensed a bad aura underground, but I don't know where exactly."

Although her mental power is very strong, she does not have the flexibility of Li Qing, because she is only using it instinctively, while Li Qing is using it systematically, so she can only sense where there is an abnormality but cannot lock it, while Li Qing can easily lock that place.

So Li Qing nodded gently: "I know where it is."

Lala nodded quickly: "Catch it."

"Okay." Li Qing nodded.

In that muddy space, Li Qing's mental power gathered and formed a hazy figure, which was exactly his appearance.

This is Li Qing's spiritual clone.

As soon as this clone appeared, it attracted the attention of the ghost hiding inside. It was a ghost that was completely black as if it was made of mud. After seeing Li Qing emerge, it directly controlled the mud in the space to cover Li Qing. Although it didn't know how Li Qing appeared, there was no doubt that Li Qing was very dangerous, so its attack came directly. Li Qing also stretched out his hand to draw a circle, and a golden spark portal opened, and the mud rushed in and disappeared. Then Li Qing put his hands on his chest and formed seals. A spark magic circle unfolded, and then the chains flew out directly, and five chains fell towards the ghost from all directions.

The ghost was surrounded by the chains. He wanted to resist, but the chains fell and wrapped him up like a dumpling.

All its resistance was in vain. Even if it wanted to turn into mud and escape, it couldn't, because its spirit was also bound, so it could only be tied up obediently.

Then the portal opened again, and Li Qing's spirit took the ghost in. When they were outside, the spirit returned to Li Qing's body. The ghost entangled by chains was hung in front of him. This scene made Kanae Kocho stunned, and she had no idea what was going on.

Her strength had greatly increased and she had originally wanted to fight with ghosts to experience it, but things turned out like this.

Before she found the ghost here, Li Qing directly pulled the ghost out, and he did it with his clone. This kind of thing had never been seen in the ghost's blood magic, so now she was very surprised and didn't know how to react.

She totally didn't understand what just happened.

Lala didn't think so much. She was looking at the tied-up ghost, who had a mouth full of fangs and spikes on his forehead, spikes on his arms, legs and ankles. There were mysterious lines on his dark skin, and his body looked a little hunched, but he exuded a chilling aura, and his eyes were bloodshot, as if he had no reason at all. When he saw Lala looking at her, he grinned at her, and there was blood in his teeth.

Lala quickly withdrew her gaze. Such a monster was too disgusting. She really didn't want to look at it again.

Li Qing also thought this thing was disgusting, so he didn't look at it carefully.

When Kocho Kanae encountered a ghost before, she would usually kill it with a single blow, and would not pray until the ghost turned into ashes. This was the first time for her to catch a living ghost and take a closer look at it. However, she did not take a closer look, but asked Lala and Li Qing: "Why did you catch her?"

Li Qing glanced at Lala and said, "Lala is useful."

Kanae Kocho looked confused, and suddenly she remembered the tied-up little girl she had seen in the laboratory on the cloud-like field. At that time, Lala said that the little girl was a bad girl who had eaten a devil fruit, so she was tied up there by Lala for research. Is Lala going to study this ghost again now?

Butterfly Chanae thought of this, and then her face changed: "Ghosts are very dangerous."

She was worried that Lala wanted to study the ghosts' regenerative ability because she was attracted by it, and that something bad might happen.

Lala blinked her eyes: "I know."

Butterfly Kanae felt that Lala didn't understand what she meant, so she wanted to say something to make Lala understand her meaning completely. However, just as she was about to speak, Li Qing's voice came: "Lala doesn't want to gain the power of a ghost, but wants to study other things."

"What is that?" Butterfly Kanae was curious.

Li Qing glanced at the ghost. He knew that Muzan Kimuji could know what the ghost had experienced through these ghosts spread all over the world, so Muzan Kimuji might be watching in the ghost's consciousness. Then Lala's plot could not be revealed. If Muzan Kimuji was really watching, then Muzan Kimuji would definitely kill the ghost after hearing the plot. So Li Qing rolled his eyes and said, "I'll tell you later."

Of course, Butterfly Chane was not satisfied with this answer, but she finally nodded: "Okay."

She didn't ask any more questions.

Lala looked at Li Qing curiously, not understanding what Li Qing was hiding, but she didn't say much because she felt that Li Qing had her own reasons.

"How to research?" Li Qing asked Lala.

Lala thought for a moment and said, "We need to send her to the laboratory first."

Li Qing nodded: "Okay."

I glanced at Butterfly Chanae and said, "You can come too."

"Okay." Butterfly Kanae also nodded.

So they found a place, opened the door to the world, and the three people and one ghost went straight in and appeared in a laboratory above the clouds.

The ghost didn't know where he was. The closed door undoubtedly blocked the ghost Mutsuji Muzan from spying on this side. No matter how powerful Mutsuji Muzan was, he couldn't observe the situation here through the gap between the worlds. Li Qing placed the prize on the experimental table, and Lala started to get busy. Li Qing and Kocho Kanae didn't understand anything, so they couldn't help at all. After standing by for a while, Li Qing took Kocho Kanae out.

Butterfly Chanae was still looking at the door of the laboratory. Li Qing smiled and said, "Don't worry, Lala won't do anything rash."

"What is she researching?" Butterfly Kanae was still very worried.

Li Qing felt that he could tell Butterfly Kanae now, because as mentioned above, it was impossible for the demon Mutsuji Muzan to find out what was happening here, and now that he had left the laboratory, the ghosts in the laboratory could not hear their conversation, so Li Qing said directly: "Lala is investigating the source of the ghosts."

"Source?" Butterfly Kanae was surprised.

Isn't the origin of demons the demon Mutsuji Muzan? Is there any need to check this out?

Li Qing nodded and said: "Lala wants to make a tracker based on this source, so that she can find Onitsuji Muzan."

Butterfly Chanae was stunned. After a while, she finally reacted and her eyes lit up: "Is it really possible?"

"Okay." Li Qing nodded.

……

106. I’ll kill you! (Subscribe!)

Butterfly Kanae was very excited when she heard Li Qing's words, and kept looking towards the laboratory.

Because if what Li Qing said was true, then what was being developed in this laboratory would be something that could allow these ghost hunters to fulfill their long-cherished wish for thousands of years. If this thing was really produced, then Muzan Mutsuji would really have nowhere to escape, so Kanae Kocho was extremely excited.

They, the Demon Slayer Corps, have always wanted to kill Muzan Kimuji, because only by getting rid of Muzan Kimuji can they truly solve the problem of demons.

But no trace of Kibutsuji Muzan could be found.

It was as if Muzan Kimusuji did not exist. They searched every aspect of the country but could not find him at all. So Muzan Kimusuji has always been a legend to the members of the Demon Slayer Corps. They only knew about Muzan Kimusuji's existence from some secret news but had never encountered him. So even if they wanted to find Muzan Kimusuji and besiege him to death, it would be impossible. But now they have this opportunity. As long as Lala makes that machine that can really find Muzan Kimusuji's trace, then Muzan Kimusuji will never escape their pursuit. In this way, they can concentrate all their strength and go find trouble for Muzan Kimusuji. Although whether they can defeat Muzan Kimusuji is still an unknown, this is definitely much better than not finding him at all before.

As Butterfly Kanae thought about this, she became even more uneasy and would look towards the door of the laboratory from time to time.

Li Qing glanced at her and said, "You are too nervous."

Kocho Kanae gave a bitter smile. It was impossible not to be nervous about something like this.

The Demon Slayer Corps has been fighting against Muzan Kimuji for thousands of years. Countless people have died in the fight, and countless heroic spirits are looking forward to Muzan Kimuji's complete death. Now that the goal of thousands of years of struggle has a glimmer of hope, Kanae Kocho certainly cannot calm down.

Li Qing also knew that it was impossible for her to calm down, so he just shook his head and said nothing more.

Time passed slowly like this. Li Qing ignored Butterfly Kanae and closed his eyes and began to meditate. His practice had never stopped, meditation had been going on, and his magic power had been increasing. It was just that there was nothing good to describe about this normal thing, so he had never described it. His magic power had undergone a complete transformation compared to the beginning, and he had also created a lot of magic based on his own characteristics. His strength was really strong. Don't forget that it had been less than two months since he learned magic.

So this is really amazing.

"But there is indeed a lack of conventional magic." Li Qing said to himself.

He doesn't know much about magic of the attributes of earth, wind, water, and fire, so now he is thinking about whether he should go to Rias or Himejima Akeno to learn some. This way, he will have more magic to choose from when he encounters some problems in the future, and it will be easier to deal with some specific things.

"I'll go find them after this matter is over." Li Qing made up his mind.

Just as he was thinking about this, the door of the laboratory suddenly opened, and Lala came out with a smile. Butterfly Kanae hurried to greet her and asked about Lala's experiment excitedly. Lala smiled and said, "It's successful."

"Really?" Butterfly Kanae's eyes suddenly lit up.

Lala nodded and gave her the watch-like object: "Wear this and you can find the ghost king."

Butterfly Chane took the watch subconsciously. She had never seen a watch before, so she looked very curious: "How do I use it?"

Lala helped her put it on and taught her to press the button next to it. Three seconds later, the watch face lit up with something like an arrow on it: "This arrow is pointing to the Ghost King. Just follow the direction the arrow is pointing to and find it. It will also show how far away it is from you."

Butterfly Kanae nodded quickly and examined the thing carefully, looking extremely cautious, fearing that it might be broken.

"There's a small arrow next to this, it points to other ghosts within a hundred miles around you." Lala said to the small arrow on the dial: "As long as there is a ghost within a hundred miles around you, the small arrow will light up, and you can find the ghost when you go there."

Butterfly Kanae nodded quickly, and at this time Li Qing asked: "What if there are many ghosts within the one hundred miles?"

"Then smaller arrows will appear, pointing to the locations of these ghosts. The split arrows can split into ten, so they can point to ten ghosts." Lala said.

Li Qing nodded: "Is that so."

After taking a look at the watch, I realized that it was indeed a magical weapon for the Demon Slayer Corps.

"What is energy?" Li Qing asked again.

Lala smiled and said, "It's solar energy. If it runs out of electricity, just shine it in the sun for a while."

When Butterfly Kanae heard this, she quickly nodded again.

At this time, Lala took out another knife, which was almost the same as the original knife of Butterfly Chanae, and then Lala handed the knife to Butterfly Chanae: "This is for you, so it will be more convenient for you to kill ghosts."

Butterfly Kanae was at a loss: "Knife?"

Lala smiled and nodded: "I made this knife specially. When I was researching, I found that the body of a ghost would turn into ashes under the sunlight, and nothing would be left in the end, so I made this knife. This knife is the Sun Sword."

As he spoke, he pressed the handle of the knife, and the next moment the knife emitted a hazy purple light.

It makes the knife look beautiful, like a magic weapon.

"It's also solar-powered." Lala said with a smile.

Kanae Kocho hummed curiously and looked carefully at the Sun Sword in her hand. She was very surprised when she heard that it was a Sun Sword, because if this was a sword that could really emit sunlight, then dealing with ghosts would be really easy. Powerful ghosts would quickly turn into ashes under the sunlight, and I believe that Mutsuji Muzan would be no exception. It would be much easier to deal with Mutsuji Muzan in that way. But now the light emitted from the blade was not sunlight at all.

In Butterfly Kanae's understanding, sunlight is golden or white. The light above the sun is golden, and after it comes to the ground, perhaps because the journey is too long, a lot of energy has been consumed and it turns white. But now the color of the knife is a hazy purple light, and it is not dazzling at all, so she really can't tell that this is the Sun Sword. The Sun Sword should be so dazzling that people can't open their eyes when it is pulled out.

Lala said: "This is the Sun Blade. Sunlight actually has no color."

"Really?" Butterfly Kanae was puzzled.

How could such a big golden fireball hanging in the sky be colorless?

Lala explained the concept of wavelength to Butterfly Kanae, and said that color is only seen by the human eye. Butterfly Kanae was stunned and had no idea what Lala was talking about, but she nodded in the end. If she didn't understand, then she didn't understand. As long as the sun blade was real, it didn't matter what form the sun took. It was best if it could kill ghosts, so she nodded: "I understand."

Lala smiled and nodded: "As long as the ghost appears within a hundred meters of it, it will be burned by the light it emits."

Butterfly Kanae's eyes lit up even more: "It's even more powerful than the Sun Blade."

And it’s much more powerful.

The Nichirin Sword requires cutting off a demon's neck to kill it, but the demon will die naturally if it only appears within a hundred meters. This is completely different from the previous concept.

Lala smiled and said, "It only takes three seconds for a ghost to turn into ashes."

Kocho Kanae nodded quickly and held the Sun Sword tightly, never wanting to let go. This was a magical weapon for killing ghosts.

"Thank you!" Butterfly Kanae bowed solemnly again to express her gratitude.

Lala smiled and waved her hand: "You're welcome."