The universe begins with Demon Slayer: Kimetsu no Yaiba

Tanjiro saw that Rentakizao was becoming more interested in it, which he rarely did recently, and he couldn't help but get closer, and then asked: "Master, Mr. Steel Mound, is Shiroha-senpai's two-color blade special?"

"It's not a special reason, but the two-color blade never existed before!" Nintaki Sakonji said to Tanjiro.

When Bai Yu heard what Ning Taki Sakonji said, he understood why they were so shocked. It turned out that his two-color Nichirin sword was unique.

What difference does it make if this is a two-color Nichirin sword? Is it just plain good-looking? Bai Yu couldn't help but ask himself.

"It's simply the best! These two colors blend together like water and milk, very harmonious, without any conflict. It's simply a stroke of genius!" Iron Tomb gave Bai Yu's two-color Sun-Run Sword a very high evaluation, and Iron Tomb Looking at Nichirin Blade is like looking at a very beautiful woman.

"Since the two-color Nichirin sword is unique, how is it different from the ordinary Nichirin sword?" Bai Yu brought this up at this time.

As soon as Bai Yu raised the question, he immediately stopped Rintaki Sakonji and Steel Tomb.

None of them had ever used a two-color Sun-Run Sword, and a two-color Sun-Ren Sword had never appeared before, let alone any previous records, so no one knew what the difference was.

"Perhaps you won't know this until you use it yourself." Nintaki Sakonji gave a relatively straightforward answer.

The Iron Tomb also nodded in affirmation. After all, the color is produced according to the owner. Since Bai Yu's Nichirin Sword produces two colors, it should be related to Bai Yu himself.

"Based on my speculation, I think the sky-blue water-like part is related to the water breathing that Bai Yu learned, because your sword is also sky blue. As for the sudden green color, I can't guess. Here it comes." Iron Tomb expressed his analysis.

Bai Yu and Lin Taki Sakon nodded in agreement.

After Iron Tomb finished speaking, he handed Bai Yu's two-color sun blade back. Bai Yu also took the Nichirin Sword back into his hand and put it into the scabbard.

In fact, Bai Yu already had his own guess about the dark green color that suddenly appeared. The appearance of this second color may be related to the breath of wood, because the color of wood is green.

"Then I also learned water breathing. Why is the sword not sky blue but black?" Tanjiro asked again in confusion.

When Tanjiro asked this question, Steelzuka and Nintaki Sakonji were unable to give a reasonable answer, and they could only give speculative answers.

"Perhaps you have not mastered the essence of water breathing!" Iron Tomb struck without mercy.

"Perhaps it has something to do with your personality!" Nintaki Sakonji guessed from another direction.

When he heard the words of Steel Tomb, Tanjiro felt as if he was stabbed in the heart. He studied so hard, but he was said to have not learned the essence.

And Nintaki Sakonji's words made Tanjiro feel a lot better. Compared to the two people's answers, Tanjiro was more willing to believe his master's. Perhaps it was because of his personality that the Nichirin Sword was black.

While everyone was discussing, two crows flew into the wooden house.

"Bai Yu!"

"Kamado Tanjiro!"

The crows that flew in were the crows used by the Demon Slayer Corps to send messages. As soon as they flew into the wooden house, the two crows called out the names of Shiroha and Tanjiro.