From Demon Slayer, the sword is invincible

"Mr. Knife!"

"Teacher! Come with us and see!"

"We have solved the secret of the puppet!"

“There really is a knife!”

The next morning, Feng Xiaodao was woken up by two excited little guys and was dragged to the workshop. Feng Xiaodao didn't expect that the doll would be untied in just one night. It seems that Xiaotie is quite talented in this area.

"Xiaotie, Huilizai, you guys are really awesome!" Feng Xiaodao did not hesitate to praise himself.

"I don't have any!" Xiaotie looked intoxicated, as if he was asking you to praise me more.

The two excitedly walked into the workshop with the Wind Knife. Inside the room was a huge puppet of Huiliya, but the puppet's head had been removed, and the rusty handle of the knife appeared in front of the three people.

"Why didn't you take out the knife?" Feng Xiaodao asked puzzledly.

"Of course I came to share it with the teacher as soon as possible. Without the teacher, we would not have been able to discover this secret. We want to witness this glorious moment together!" Hui Liya explained happily.

"Xiaotie, Huiliya, you two are very good. Now let me see the true face of this secret!" Feng Xiaodao said, then picked up a piece of oilcloth on the workbench and carefully wrapped the handle of the knife.

The entire knife runs vertically through the body of the puppet, with the handle located on the head and the blade located in the middle of the puppet's body.

Feng Xiaodao gently grasped the handle of the knife and tentatively pulled it out with force. The reason he was so careful was that he was afraid that he would use too much force and damage the puppet, which would be a waste of the two little guys' hard work.

The two children stared at Feng Xiaodao's every move intently, as if they were afraid of missing something.

Perhaps too much time had passed and the whole knife was a little rusty and stuck inside the puppet's body. However, this did not pose a problem for Feng Xiaodao. The hand holding the knife exerted force with a very small vibration, and the whole knife immediately felt loose, and was finally slowly pulled out by Feng Xiaodao.

As the blade was completely separated from the puppet, a stale smell came to his face. Feng Xiaodao carefully examined the knife in his hand. To be honest, the whole knife was really not beautiful. The blade was covered with a layer of colorful rust, as if it had been eroded by time and only a broken iron bar remained.

The two little guys also came over to look at the final results of their exploration.

"Is this the weapon of the legendary warrior? Why does it feel a bit..." Xiaotie didn't know how to describe it.

"You're very disappointed, right?" Huiliya hurriedly said on behalf of Xiaotie.

Xiaotie nodded in agreement and looked at Feng Xiaodao with a puzzled look.

Feng Xiaodao had expected this, and shook his head to teach the two children: "So you are still little guys, you can't just look at the surface of things. This knife is just covered with dust by time. It only needs a master knife maker to repair it and it will be shining again.

Think about it, this knife has not been maintained for hundreds of years, but it still maintains its appearance. If it were an ordinary knife, it would have rusted into dregs after such a long time. This shows how extraordinary it is! As for the other things, you two wouldn’t understand even if I told you two.”

Xiaotetsu nodded, not quite understanding, but Huiliya understood what Feng Xiaodao meant. Then the two little guys lost interest in the knife and turned around to mutter about how to repair the battle doll.

Discovering a secret makes them feel very accomplished, but that’s how children are, interest comes and goes quickly, and they are now working on the next achievement.

"Xiaotie, can you lend me this knife for future use?" Feng Xiaodao asked Xiaotie politely.

"Mr. Xiaodao, feel free to take it. I can't use it anyway, so I'll just give it to you!"

"You may not understand the value of this thing. It's a very powerful knife!" Feng Xiaodao was afraid that Xiaotie would regret it, and he didn't want to deceive a child.

Xiao Tie said seriously: "I may never be a swordsman in my lifetime, so this sword has no value to me. If it is really that powerful, then it would be best to give it to a strong person!"

"Although this knife is very powerful, it is not my knife. Forget it, I will keep it for you temporarily. When you want to give it to someone in the future, just ask them to come to me for it!"

"Mr. Xiaodao, just make the decision!"

Then the two of them concentrated on studying the dolls. Feng Xiaodao shook his head and walked into the yard with the legendary sword of Yuichiro Tsugikoku.

Actually, I didn't finish what I said just now. When I held the knife, I felt a sharp feeling. The two little guys didn't understand this feeling. I thought to myself: It seems that this knife has some unknown secrets besides its hard and sharp texture.

Feng Xiaodao found a quiet and comfortable place to sit cross-legged, stroking the blade thoughtfully, continuing to explore that wonderful sense of sharpness.

As Feng Xiaodao adjusted his breathing, his heart slowly calmed down. He closed his eyes, placed the rusty knife in his hands, and entered a state of meditation. Slowly, he felt a strange energy coming from the knife.

"Could this knife have any special abilities?" Feng Xiaodao wondered secretly in his heart.

He decided to test the power of the knife, so he took a deep breath and mobilized the energy generated by the Thunder Breathing Technique to push as much as possible towards the blade. Suddenly, the blade began to tremble slightly, a faint red light flashed, and the surrounding air seemed to become hot and sharp.

"What a strong momentum!" Xiao Tie and Hui Liya couldn't help but exclaim, with a hint of surprise in their eyes. He realized that this mysterious knife might hide an unknown power. Seeing that the knife did react, he increased his strength.

Suddenly, an extremely hot feeling like a hot knife cutting butter came, and Feng Xiaodao's body reacted instinctively in an instant.

Ding! The rusty knife suddenly fell from Feng Xiaodao's hand to the ground with a crisp metallic sound.

Feng Xiaodao looked at his hand. A small wound appeared on the palm of his hand. No blood flowed out because the surface of the wound was scabbed as if it had been burned by fire.

Feng Xiaodao looked at the knife on the ground in surprise, thinking: "What on earth is going on? Is this world so fantastical? This knife can actually attack people on its own? There is no such function in the original book."

Suddenly Feng Xiaodao thought of a possibility. Could this unknown energy be like the sword intent in martial arts? And this burning feeling might be contained in the sword intent because Tsugumi Yuichiro has been using the Sun Breathing Method.

If this is the case, it can explain why Tsugaru Yoshiichi is so powerful. When he meets Muzan, even though Muzan's body is split into more than 1,800 pieces in an instant, he can still destroy nearly 1,500 pieces in an instant.

Feng Xiaodao had previously doubted how one person could swing so many swords in an instant. Even if one sword could kill more than a dozen slices of meat, that would mean more than a hundred swords would have to be swung at once. What kind of speed would that be?

In the real world, the fastest sword drawing speed is 0.1 seconds, and the speed is 120KM/H. If one moment is calculated as 1 second, and the time for changing moves is taken into account, only 5 swords can be drawn. If 20 swords are drawn, it is 2400 times the former, and the speed reaches KM/H.

What does 2400KM/H mean? The speed of sound is only 1224 kilometers per hour, and this attack speed is twice the speed of sound. Imagine the scene of each move being several times the speed of sound, and the sound of sonic booms is endless. Just call him Sonic Sword God or Mach Swordsman.

With the physical strength of this world, it is absolutely impossible to withstand such a speed of attack. One or two moves are fine, but more than that is just a bone-shaking sword. But if it is the sword intention, it can be explained.

Feng Xiaodao picked up the rusty knife that fell on the ground, his eyes filled with fiery eagerness.