I teach kendo in Tokyo

Just injecting it will give you the power to fight Kiryu and Kazuma? "Jiazuo looked at the aluminum box in his hand in ecstasy. He saw that the injection in the aluminum box was squirming like a living thing, reflecting a strange purple light under the ambient light. Jiazuo looked at it with his mouth slightly open as if he was confused.

"Kozo, you, don't do anything stupid!" Dahei's voice next to him trembled slightly, and his body seemed to retreat unconsciously. In fact, even without him having to say anything, anyone could tell that the so-called "super serum" was actually quite something bad. The catfish essence only said that by injecting it, you can gain the power of outsiders, but the price is probably to lose a normal life from now on, right? It's even hard to say whether you can still be a human being after gaining the power of being a heretic.

Kozo, who was quite aware of this, looked at the injection in the aluminum box with an unusually entangled expression, and Dahei did not dare to disturb him. As he stared with bated breath, the anxious atmosphere that was entangled in Kozuo's body gradually weakened. It was not only the atmosphere that weakened, but Kozuo's thoughts, emotions, opinions, etc. all weakened sharply. In the end, even his "human" feeling became extremely thin. The strange purple light emitted by the injection enveloped him, and his originally fleshless face looked as ferocious as if possessed.

"...Kang Yi, do you still remember when we were arrested by GA for interrogation when we were in college?" Jiazuo spoke suddenly, his unusually soft voice giving off a nervous feeling.

"Of course I remember, what?" Daping responded with a frown. He and Kosa were students at the same time at Meiji University. At that time, Kosa was bullied by Yanyi at the banquet and sang the Internationale angrily. As a result, he attracted GA's attention, and then the two were called for questioning. The person in charge of interrogating the two people at that time was an operator named Aramaki. Although Kozo described it as "interrogation", the actual situation was closer to a relaxed "drinking tea". Aramaki didn't take the two-literate weak student seriously at all, but it left a humiliating and frightening impression on Kosa Daihei.

"It didn't matter then or this time, no matter how hard we try, the person with the power can easily take away everything from us... Don't you think it's unfair?" Kozo's voice sounded a little dazed, and Ohiraichi Time doesn't know how to answer. Compared to Kosarai, who has an extreme tendency, he is afraid of death due to his conservative tendency, but he has a clearer understanding of his own actions. For a long time, they have skirted around the law and used brainwashing techniques to obtain illegal benefits. These cannot be regarded as legitimate behaviors, and describing them as "efforts" is too shameless behavior.

Ohira Yasuki glanced at Kosa and found that he seemed to have lost even such basic judgment. Something will definitely happen if this continues, and now may be the last chance to prevent the tragedy. Daping trembled and clenched his fists, quietly glancing at the catfish spirit next to him. After the suspicious serum was given, Catfish Spirit acted as if it had nothing to do with him. He fanned a folding fan with his short hands and sat on the wall, watching. There was no intention to persuade Kozo to take the injection, nor to prevent him from leaving... Perhaps to the residents of the mysterious side, these human entanglements are really insignificant matters, right? Daping couldn't help but feel this way.

"... Even if I continue, I don't know when I will run into trouble again. I'm tired, Kang Yi... Maybe it's a good idea to try another way. Of course you will still accompany me, right? "Kozo's voice floated from the side, and Daping looked back but couldn't help being surprised. Because Kozo didn't know when he took the injection out of the aluminum box and plunged it under his arm.

"Wait, don't..." Before Ohira Yasuki finished speaking, Kozo had already pushed down the syringe hard.

About ten milliliters of "super serum" in the syringe was injected. During the first few shots of the serum injection, Kozo managed to maintain an inorganic smile, but beads of sweat the size of soybeans appeared uncontrollably on his forehead. In the very next beat, Kosa bent down as if he had been punched, and more than one scream and scream erupted from his throat.

Under Ohira Yasuki's horrified gaze, Koza's left arm injected with serum expanded rapidly like an inflated balloon, and the stretched flesh became translucent. Through the clearly visible blood vessels and nerves, one can see a mass of purple energy surging fiercely under the skin. The purple energy flows along the blood vessels throughout the body, and the skin where it flows bursts open, revealing a structure like fish scales underneath. Purple energy surged to Jia Zuo's head, and the skin on his face was ablated inch by inch, and finally turned into a sharp point and rushed out from the Tianling Gai. Kozo finally screamed out unbearably, but the wailing sound was drowned out by the multiple curses rushing out of his throat.

"Ah...ah..." Witnessing the terrifying scene that was beyond description in words, Daping Yasugi was so trembling that he could not speak. Unlike Kozo, he is a mortal who has never been exposed to the mysterious side, so it is natural for him to be frightened. What's more, even if he wanted to bring Kozo back at this time, he simply couldn't do it. Ohira Yasuki turned around and ran away with a scream. This was the first and probably the last time the two of them had drawn such a distinction since graduating from college.

Of course Kozo also heard the sound of his classmates collapsing and running away, but at this time he had no time to care about other things. The super serum injected into his body was transforming his body with unspeakable cruelty. Kozo heard the sad sound of his bones being broken and reassembled, and the dull sound of his heart pumping blood at an ultra-high frequency. The pumped blood was as acidic as aqua regia, and the internal organs felt as if they had been put into a lava lake to be tormented. At the same time, thousands of curses and roars exploded in his mind, and violent emotions rushed into his consciousness one after another. The forced experience that was thousands of times stronger than vicious brainwashing made Kozo unable to survive or die.

In a trance of life and death, Kozo suddenly thought of the customers he had "treated". Those faces that were either empty or miserable appeared in front of my eyes with unusual clarity for some reason. Kozo suddenly thought of the word "reflection", but only for a moment. In the next moment, his spirit was swallowed up by the huge amount of curses and resentments that poured into his mind. Those chaotic and violent emotions destroyed the personality named "Kozo" in an instant.

"..."

Kozo rolled his eyes and fell backwards to the ground. The clothes on his body were torn into pieces, his limbs were twitching like frogs with electrodes plugged in, tears, nose, sweat and urine flowed out like a broken faucet, and he was mumbling words that no one could understand. There was no trace of human dignity left in that appearance, and the even sadder fact was that no one at the scene observed a moment of silence.

"The blood marrow of a half-demon, plus the possession of an evil spirit? Hey, what on earth are those guys planning to create..."

The only catfish spirit present looked coldly at Kosa, who had completely lost his appearance, and grinned his plump lips in a rather sinister arc.

There are many big monsters in the mysterious side who have gone down in history. He is a mere catfish and can only be regarded as a miscellaneous fish who has lived a little longer. No matter whether he is famous or powerful, he is not worthy of mention. But because he has lived long enough, he knows a lot of things. "Blood Refining" is the essence of monsters' flesh and blood. Big monsters like Tamamo Mae like to enjoy the blood refining of small monsters as a tonic. Catfish Spirit is sure that the squirming liquid in the injection is the monster's blood refinement. However, its demonic energy was not pure, so he suspected that it was extracted from a descendant of a half-demon. Moreover, there are multiple curses mixed into the blood refining, which should be spells possessed by some evil spirits from outsiders. Catfish Spirit is not unfamiliar with heretic magic, but he has never seen it used like this.

In fact, with the weakening of the mysterious side and the hiding of the big monsters, even the method of making blood refining should have been lost. The incident suddenly appeared out of nowhere, giving him an especially ominous premonition.

"Damn it, could this also be caused by that 'science' thing..." Catfish Spirit muttered.

Ever since he was injured by a US military mine in the Pacific, he has been very afraid of that thing called "science". After finding this truly dark place, he lived in seclusion there and would not show his head outside even if he was killed. Although he didn't show his face, he also knew clearly from various information that the mysterious forces had declined rapidly after the development of modern science. He once thought that science and mystery were in a mutually exclusive relationship. With the scientific development of mankind, the mysterious side would eventually lose its place completely, but what is going on now? This so-called "super serum" is obviously a creation of human science, but it contains mysterious power. Is the so-called science so powerful that it can even deal with the mysterious side at will?

To be honest, the thought made Catfish Jing feel sick. He didn't like those mysterious guys at all. If he couldn't beat them, he would never want to have anything to do with them.

"Roaring..."

While Catfish Spirit was complaining, Kozo on the ground seemed to have completed his transformation. His limbs no longer twitched, and his body began to exude waves of demonic energy. Catfish Spirit looked at it with disgust. Examples of transforming mortals into half-human and half-demon were not uncommon in the mysterious side in the past. The more typical one is the almost perverted reproduction method of Western vampires, but it cannot be as fast as this. A mortal who becomes half-human and half-demon is also a kind of creature, but Kozo, who exudes a ferocious demonic aura, is no longer a creature in the eyes of the catfish spirit, and is more like some kind of manufactured "tool".

Isn't this what "science" likes most about making a large number of tools quickly?

Catfish Spirit smacked his tongue, feeling almost afraid of the group of people. Looking at Kozo who was slowly getting up from the ground, he began to figure out how to throw this guy out, and conducted an experiment that satisfied the group. But at this moment, Catfish Spirit shivered for no reason and raised his head in surprise. Catfish Spirit looked at the trestle connecting the buildings. This dark place was already filled with water bodies connected to him, so he could detect any changes immediately.

At this moment, two breaths as sharp as swords came from the entrance to the land of true darkness. One was more feminine and belonged to a woman, while the other was more masculine and was as hot and sharp as a red-hot sword. They were almost separated. Even from such a distance, he was shocked - that sword energy could only be unleashed by a handful of swordsmen, and swordsmen in this era were far rarer than in the war group era. So even if he had never seen it before, Catfish Spirit could almost guess who the person who broke into his territory was.

"Damn it! Look what you did! You actually lured Kiryu and Ma here. What do you want to do?"

The catfish spirit turned around and cursed Kosa. The half-demon Kosa actually reacted to Kiryu Kazuma's name. Hearing this, he raised his head and let out a ferocious roar.

**

"Kazuma, what on earth is this place? It feels like the atmosphere here is so strange."

Qingliu, who was exploring the way ahead with Qingyu in hand, looked at the large lake in the distance and the reeds beside the lake with an expression of disbelief.

"If I'm not mistaken, this should be the "Land of Eternal Darkness". I heard Tamamo mention it." Kazuma also looked quite solemn. There used to be many mysterious things in this world that were far beyond human imagination. However, with the rapid development of scientific civilization in modern times, those mysterious things have also declined at an alarming rate. Even big monsters like Tamamo have lost their former power. . However, scientific civilization is still unable to cover the entire earth. The dark places that it cannot touch are the last strongholds of these mysterious things, and they are also a magical realm that no one should approach.

To be honest, Kazuma did not expect that the pursuit of Kosa would lead to the Land of Everlasting Darkness, but this also indirectly proves that there is indeed a mysterious force involved behind Hyuga Company, which is most likely a monster that inhabits the Land of Everlasting Darkness.

"Monsters really exist..." There was a wavering look on Qingliu's face that could not be concealed. However, there was a big demon fox living in the Kiryu Dojo, and Seiryu already knew about it, so he was shaken at this time, but it was not so panic that it would affect his performance. "Kazuma, are there many monsters like Tamamo?"

"How is that possible?" Kazuma was asked and shook his head. Tamamo-mae was a great demon fox who was famous in history. There were only a handful of youkai who could compare with her. What's more, the mysterious side was greatly weakened, and most of the youkai groups had disappeared collectively. There are only three monsters he has ever seen, not including the fox at home.

"Three?"

"Well, one count is Shantaro, one count is Yume Tapir, and what is it called, and one count is someone who is an acquaintance of Tamamo." Kazuma started to count on his fingers.

Shantaro is a wolf demon he met when he first went to the hot spring village. He also adopted an artificial half-demon boy and is currently living in seclusion in the deep mountains and old forests far away from the town. If we want to divide the camps, it can barely be regarded as orderly and neutral. Kazuma and him had never known each other before, and even the name was given by Kazuma.

As for the dream tapir, he should be an old monster from the same period as Tamamo. He still retains considerable monster power, but his thinking has obviously not kept up with the times. Kazuma made his descendants pay the price for his crimes, and in the end he also formed a relationship with Meng Tapir. Meng Tapir once threatened to pay the price for his actions with Ma. Although I don’t know what he is doing at the moment, I estimate that there will be a brutal killing with high probability next time we meet...