Xu Ming (×) Muzan Kibutsuji (✓)

A hoarse crow caw echoed through the silent, pitch-black forest. A few birds fluttered and flew out of the woods, their silhouettes flashing across a full moon as leaves rustled.

Muzan, taking advantage of the dim light, returned to his residence. As soon as he entered, he caught sight of the dried bloodstains still clinging to his lips in a mirror on the side. He took out a handkerchief and wiped them clean.

Five days ago, he had accidentally died of overwork and transmigrated. Because the "kinetic energy" of his soul was too great when it arrived in this world, it had scattered Muzan's soul, causing him to faint...

He had successfully taken over the body and, by the way, absorbed the soul of the Scum Boss, gaining his memories.

Although the process was strange, it wasn't important. What was important was that staying up late really could kill you.

Before transmigrating, the Scum Boss had turned a doctor, unwilling to die, into a demon. He had also been temporarily staying at the doctor's home.

Noticing Muzan's return, the doctor—Yanagisawa Noriyuki—hurriedly bowed and respectfully called out, "Lord." Only after Muzan returned to his room did he continue with what he was doing.

Yanagisawa Noriyuki was chosen by the original Muzan to be turned into a demon because of his medical skills.

However, his character was clearly much better than the original Scum Boss. Even though he had become a demon, he didn't eat people often and only targeted those who were extremely wicked. He would also save people, just as he did when he was human.

This made the original Scum Boss very displeased. If it weren't for his medical skills, he would have killed him long ago. But it made the current Muzan much more comfortable.

Returning to his room, Muzan continued to pull a book from the bookshelf and sat on the floor to read.

He himself never expected that after transmigrating, he could actually calm down and read. And it was theoretical medical books, which he used to find very boring.

Perhaps it was due to the influence of the original Muzan's memories, or perhaps this era was too boring.

It was still the year 1467, the Sengoku period of this island nation. There wasn't much to do, and he wanted to slowly wait until mobile phones appeared. If he didn't read something to pass the time, he would die of boredom.

The sky gradually brightened, and the morning sun shone on the floor through the paper window. Muzan felt a scorching sensation, so he found a black cloth to block the sunlight and continued reading.

It was fortunate that he was a demon and could see the text clearly in the dark.

As for Yanagisawa Noriyuki, he waited for patients to come for treatment, just like when he was human, while studying how to overcome sunlight using Muzan's blood.

But the current Muzan could already "see" his thoughts: I can't do it, I really can't do it!

He was just an ordinary doctor, at most a skilled one. Helping demons overcome sunlight was something he truly couldn't do!

Muzan reached the last page of a book over five centimeters thick. The white paper beside him was also filled with dense, small characters. Muzan closed the book, put it back on the shelf, put away his notes, and stood up.

The door to the outer room was half-open. Muzan pushed it open and saw Yanagisawa Noriyuki flipping through a thick tome. The white paper beside him was also densely written, but his expression was one of pain, almost identical to Xu Ming's expression when he wrestled with the last math problem during the college entrance exams.

He was still racking his brains to fulfill the Scum Boss's request, even though it was beyond his capabilities.

But in order not to be killed for having no value, he had to force himself to do it.

Noticing his cruel and heartless boss approaching, his body stiffened involuntarily. He couldn't help but swallow and quickly stood up, lowering his head and not daring to speak.

Muzan was already accustomed to the way his subordinates acted. He picked up the thick book on the table: "If you can't do it, stop wasting your effort."

Hearing this, Yanagisawa Noriyuki's already pale face turned even whiter. Sweat beaded on his forehead, and his voice trembled: "L-Lord! I can do it!"

Muzan closed the book and looked at him speechlessly. Was he afraid he would discard him once he was no longer useful? "I won't kill you. Just slowly improve your medical skills."

After speaking, he took the thick book and turned to leave.

The main purpose was this book. Telling Yanagisawa Noriyuki not to bother was just a side note.

Couldn't find the book title, you can try searching for the author, maybe the name has been changed!

Knock, knock...

A light knock came from the wooden door outside. Muzan turned around, pulled over a small stool with interest, and sat down to the side.

Yanagisawa Noriyuki glanced at his boss's expression before speaking to the door: "Come in."

Three people wearing Demon Slayer Corps uniforms, with swords at their waists, strode in. Two people supported the person in the middle, one on each side.

Seeing their attire, Yanagisawa Noriyuki's face stiffened, and he instinctively wanted to flee.

But Muzan's voice echoed in his mind: "Stay calm, they're here to ask you for help."

To be honest, Muzan was also taken aback the moment he saw them. But he thought that they had knocked and received permission before entering, and they didn't seem very strong. They probably couldn't tell they were demons, so he relaxed.

Moreover, the person in the middle had blood soaking through his clothes on one side of his waist, and the other two also had clothes with many rips and injuries on their arms.

Interesting. The Demon Slayer Corps had actually come to a demon for treatment.

Kibutsuji Muzan possessed five brains and seven hearts. The five brains not only provided powerful memory and intelligence but also allowed him to monitor his subordinates at any time.

However, after transmigrating, he had become too lazy to monitor them.

Seeing them like this, he checked the situation of his subordinates.

No nearby demons had encountered the Demon Slayer Corps either.

Receiving Muzan's hint, Yanagisawa Noriyuki felt at ease and let them place the patient on the nearby bed to examine the injuries.

At the same time, his expression was troubled.

He didn't dare to save them!

Although a doctor's heart is benevolent, it's better to live a dishonorable life than to die honorably.

How could he dare to treat a Demon Slayer in front of the Demon King!

"Save them."

While he was hesitating, his boss's voice appeared in his mind again. Yanagisawa Noriyuki immediately relaxed and, following Muzan's intention, asked casually:

"How did you get hurt so badly?"

In the Sengoku era, the existence of maneating demons was practically as well-known as gods and spirits.

The youngest-looking member of the Demon Slayer Corps leaned his Nichirin Blade against the bedside and sat to the side, saying angrily, "We ran into some bandits! Damn it! What trash!"

Another person was also very frustrated, "And we let them get away! Tsk!"

Yanagisawa Noriyuki, while tending to his wounds, chimed in, "Ah, this chaotic era..."

"Right, you guys should try not to go out at night. Someone nearby was taken by a demon again."

Upon hearing this, Yanagisawa Noriyuki agreed, all the while considering whether he should change locations. Even though it was currently chaotic, with bandits rampant and wars breaking out, staying in one place for too long would eventually lead to him being discovered. It seemed he was close to being found out.

After seeing the others off, Muzan looked at Yanagisawa Noriyuki and said, "Don't worry, they're talking about another demon."

Although Muzan didn't create many demons, because they were confined to Edo, their density wasn't small.

There were indeed a few other demons lurking nearby.

"Also, go take care of those bandits tonight and bring me one back."