Lingering Fear

Yoriichi finished breakfast and, as usual, began his day's training. Muzan suddenly remembered something and lay on the rocking chair under the eaves' shade, watching Yoriichi swing a bamboo sword and strike the wooden dummy he had found.

"Yoriichi, how do you activate the Clear World?"

"The Clear World?" Yoriichi blinked. How did Muzan know about it?

He had never told him.

But thinking about how much Muzan knew, he relaxed.

"Can't you enter the Clear World?"

Muzan: (￣_￣|||)

What kind of Versailles-level statement is that?!

Seeing his expression, Yoriichi got his answer:

"The Clear World is achieved through ultimate mastery of the body, allowing one to isolate 'fighting spirit,' which is similar to killing intent, from the outside world, enter a state of no-self, and heighten perception to its peak..."

Muzan nodded. Learning what the Clear World actually was from Yoriichi, Muzan finally understood it.

Activating the Clear World required extreme pain, and desperate situations often made it easier to trigger.

Of course, cheat players were an exception; they were born with Scarlet Traces and the Clear World.

Moreover, it was more like the pinnacle of a skill, requiring a powerful physique to possess the Clear World.

Damn cheat players!

Muzan didn't expect to trigger the Clear World through a desperate situation himself, so he began practicing according to his own understanding.

Time passed quickly. Muzan watched the two children grow up while trying to enter the Clear World.

One day, Yoriichi once again asked Muzan to spar with him.

Muzan watched Yoriichi's progress and felt confident in his strength.

He leisurely waited for Yoriichi to attack.

Yoriichi's face was solemn. He drew his sword with great seriousness, took a deep breath, then suddenly charged forward, his blade whistling through the air as it descended.

At that moment, Muzan was stunned.

Looking at the "special effects" that were vividly displayed before his eyes, Muzan's pupils contracted.

Sun Breathing?!

You've got a Breathing Style at this point?!

Muzan hastily raised his sword to defend. A fiery aura rushed towards him, and the sun-like radiance made him slightly uncomfortable.

Yoriichi's every strike was fast and fierce. Due to the impact of the Breathing Style, Muzan instinctively unleashed his full strength.

At this moment, Yoriichi felt an extreme, terrifying pressure. The aura of the person before him suddenly became unfamiliar.

Violent power, a life force that seemed to devour everything. The young Yoriichi was so overwhelmed that his breathing momentarily stopped. In that instant, something seemed to pierce through Yoriichi's mind. His eyes widened, and his movements became incredibly smooth.

Muzan realized he had overreacted and quickly took a step back, retracting his sword. But immediately after, he saw Yoriichi's crimson blade carve out a sun-like circle, and a slash came towards him.

Muzan's pupils contracted. An unprecedented sense of danger washed over him. In an instant, he perceived the trajectory of the sword and saw a different world.

He quickly dodged, narrowly avoiding Yoriichi's Sun Breathing, and stared blankly at Yoriichi's sword, which was surrounded by special effects.

"Woc! Yoriichi! You're trying to kill me!"

This was the Thirteenth Form of Sun Breathing!

How did it exist at this time?!

In the original story, this was something that almost killed him!

The blade struck the ground, leaving a deep indentation. Yoriichi's movements froze. He looked at Muzan with lingering fear, wondering what he had just done.

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Muzan also felt a lingering fear. Damn, raising Yoriichi was too dangerous!

Although Sun Breathing didn't pose a threat to him now, if Sun Breathing existed, and the Thirteenth Form existed, then a Crimson Blade wouldn't be surprising either?

Muzan swallowed, put away his sword, and looked at Yoriichi, who was sitting on the ground:

"You scared me to death. Next time you have something new, tell me before you try it. This is too dangerous, it almost cost me my life..."

He still planned to live to modern times and play on his phone!

Yoriichi sat on the floor and nodded blankly. The feeling Muzan gave him just now was too terrifying; it seemed that if he were touched, he would die completely. The instantaneous danger made him overreact as well.

"Sigh," Muzan sighed, walked up to Yoriichi, and pulled him up. "Get up, don't just sit there."

Yoriichi was pulled up and nodded, sheathing his sword.

However, that brief moment had successfully allowed Muzan, whose soul had almost flown out from fright, to enter the Clear World.

What a surprise amidst the shock!

It was worth mentioning that Yoriichi always had his Scarlet Traces activated during their fights, and the fiery red blade was truly intimidating.

As expected of a cheat player.

Muzan drank a few mouthfuls of water to calm his nerves before picking up the book again. However, due to the sudden surprise and fright, his seven hearts were still pounding, and he couldn't concentrate on the book at all.

The Clear World, which he had wanted to unlock for decades, was finally open!

Although it was very dangerous just now, truthfully, it couldn't cause him any substantial damage. As long as Yoriichi didn't use a Crimson Blade, he was not in danger. At most, he was just startled, but the gains were truly immense.

While the Clear World doesn't strengthen the body, it is a manifestation of a person's (or demon's) ultimate control over their own body, absolute application of techniques, and superior perception.

As one of the major power-boosting methods for Demon Slayers in Demon Slayer, the ability of the Clear World to enhance combat power is evident.

Through the Clear World, one can see the enemy's weaknesses and make it impossible for the enemy to predict one's next move.

However, for Muzan, it was useless for now.

After all, the only one who posed a threat to him, Yoriichi, was now a brat he was raising.

Speaking of which, Yoriichi had mastered a Breathing Style without him even realizing it, and was even stimulated by him to create the Thirteenth Form in an instant.

This kid sure knows how to hide things!

He could only say that he truly lived up to his reputation as the pinnacle.

Five years later, The moonlight was gentle, and a cool breeze rustled through the leaves, casting swaying shadows on the window.

Muzan lay in a rocking chair, peacefully sleeping. For a long-lived being like him, sleeping was probably the best way to pass the time.

However, Muzan was soon awakened by the sound of Yoriichi entering the room.

He removed the book covering his face and opened his eyes to look at Yoriichi, who was holding a long sword.

At this moment, the long sword in Yoriichi's hand was stained with half-dried blood. His expression was somewhat complex, and there were several tears on his clothes, as if ripped by sharp claws. The young Yoriichi's breathing was a little rapid, his face was flushed, and the hand holding the sword was trembling faintly.

Muzan's expression couldn't help but become serious: "What happened?"

"I encountered a Half-Demon."

"?!" Muzan's eyes widened in an instant. He threw the book aside and stood up. "What's going on?"

Ever since he learned that Yoriichi had a Breathing Style, Muzan had frankly told Yoriichi that Nichirin Blades were the method to kill demons, and that Breathing Styles and Nichirin Blades complemented each other, capable of inflicting greater damage on demons.

Over the past few months, Muzan had naturally told Yoriichi about Half-Demons. And similarly, methods effective against demons were also effective against Half-Demons.

Although Yoriichi was still young, his skills were already sufficient to defeat ordinary Half-Demons and demons. Muzan was also at ease with Yoriichi running around.

After all, he was still a child, and he couldn't be cooped up in one place all the time.

"I encountered a Half-Demon in the village ahead, but I've already slain it."

Muzan frowned as he walked over and squatted down to examine Yoriichi. He breathed a sigh of relief only after confirming that his clothes were merely torn in a few places and he was not injured.

After all, he was a child he had raised for several years, and a father who was over five hundred years old couldn't help but worry.

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