An Alternative Method to Increase Strength

Based on the original work's setting, it's more like a "disease" that can overdraft oneself, and it's contagious.

But it's also like a mysterious power left by the world for demons, Muzan feels that the world of Demon Slayer is scientific, but not entirely so.

Rather than a grand conspiracy, it's more like different rules from different worlds.

It's like Newton's laws, a rule that can be further researched, but it's already an established law.

The demons under him certainly won't attract too much hatred for him, but to prevent himself from being truly punished by Yoriichi, or to avoid the final plot's game over, Muzan still needs to be well-prepared.

Demons survive by eating humans, which already locks them into an adversarial relationship with humans.

Ubuyashiki, under the curse, will also forever oppose him.

And, will there be plot power?

Like the seniors who transmigrated, will he have to fight against plot power?

After a whole day of overthinking, Muzan suddenly looked at Jikou and said, "Let's go find Tamayo!"

Jikou: "???"

He was watching his boss frown in thought, occasionally scratching his head, and suddenly heard his boss say this, looking utterly confused.

Who is Tamayo? Why are they looking for her?

Muzan stood up, looking at the night sky where a crescent moon had already risen, "Let's go!"

No matter what, he had to win Tamayo over first!

The best support in the original work, her medical skills are top-notch, which means her learning ability is also very strong. If given time to research, she might be able to solve his doubts.

Yoriichi, the Head Pillar, and the adorable Nezuko are all key figures to focus on.

While instructing the demons under him to keep an eye out for Tamayo and report back if found, he traversed through the night.

He couldn't rush finding Tamayo, so he still needed to do something else first—improve his strength.

Muzan brought Jikou to a martial arts dojo.

All fear stems from a lack of "firepower." With Yoriichi weighing on his mind, he dared not relax.

In the original work, things like Scarlet Traces and Clear World require gradual progress and depend on opportunity, needing him to break through his limits. With his current strength, it's very difficult. Who else can hurt him?

However, he could learn some techniques!

If ordinary humans can kill demons through training, then as a Demon King, if he were to learn swordsmanship, swordsplay, and martial arts, and continuously train himself, what level could he reach in hundreds of years?

Perhaps the dojo master truly had some skills. The two arrived at the entrance seeking tutelage just as dusk fell. For some reason, the master instinctively felt they were not good people and refused to teach them.

However, under Muzan's monetary offensive, the master eventually agreed.

The master led them inside. Although he couldn't resist the temptation of the enormous reward, he was still uneasy and solemnly reiterated:

"Can you assure me that you will not use what you learn from me to do evil?"

Muzan, seeing his serious expression, put away his playful demeanor and promised, "Don't worry, absolutely not!"

The master then looked at Jikou: "And you?"

Jikou glanced at Muzan before nodding in agreement.

The master sighed, walked to a shelf by the wall, picked up two wooden swords, and solemnly placed them before them:

"The Shadowless Sword Style focuses on offense. Those who learn it must first cultivate their mind. The moment you pick up this wooden sword, I am your master, but I need to know your true reason for wanting to learn swordsmanship."

Upon hearing this, Muzan replied without hesitation: "For self-preservation!"

Muzan's words were genuine, without a shred of falsehood.

The master was surprised that Muzan could answer so readily and that he appeared to be speaking from the heart.

Moreover, the reason was logical. In this increasingly chaotic era, where man-eating demons even roamed, learning swordsmanship for self-protection was perfectly normal.

Although not grand, it was realistic.

He then looked at Jikou: "And you?"

Jikou looked a bit uncomfortable and after a few seconds, scratched his head: "Actually, I don't really want to learn. I'm just accompanying my boss."

Muzan glanced sideways at Jikou, Why are you being so honest now?

He secretly communicated to Jikou through their connection as demons: "If you don't want to learn, hurry up and go somewhere cool!"

The master's expression seemed to sour at Jikou's words. You're unwilling to learn my swordsmanship, are you?!

Jikou sheepishly rubbed his nose and quickly slipped away under the unfriendly gazes of Muzan and the master.

"Sorry, he's... a bit simple-minded."

After that, Muzan followed the master's rhythm at the dojo every day. First, there were some absurd "mind cultivation" exercises. As long as he didn't have to be exposed to sunlight, Muzan completed them unhurriedly.

Although the master found it strange that Muzan had a "skin condition" that prevented him from sunbathing, he was very satisfied with his steady mindset and gentle personality.

He increasingly felt that his intuition that day had been purely a mistake.

Then, Muzan began his formal training, from basic drills to sword techniques and skills. Everything flowed smoothly. The master was amazed by Muzan's powerful physique and simultaneously delighted by his exceptionally high talent.

The other students in the dojo also noticed the new "junior disciple," a genius in swordsmanship.

He was also a rich man.

He was friendly, gentle, and didn't flaunt his talent. He even offered guidance to others from time to time.

This earned Muzan a good reputation at the dojo, but it also made him a bit impatient. Young girls, just starting to develop crushes, would often come to watch him. But it wasn't a big deal; letting them look wouldn't cost him anything. However, his fellow disciples who constantly sought his guidance would always interrupt him.

It was so annoying!

Some people even coveted his money. Don't overestimate people's limits; there will always be those who use moral blackmail to take advantage of others.

What finally made Muzan snap was when, after dealing with his disciples asking for guidance one evening, he was told his master was waiting for him in the woods behind the dojo.

When Muzan went over, confused, he realized he had been tricked. It wasn't his master who called him, but a "challenger."

It was Izumi, who also trained at the dojo.

Muzan had noticed him before. Izumi would often glare at him with resentment, but Muzan didn't pay much attention. He was only here to learn swordsmanship.

With his infinite lifespan, he couldn't be bothered with a weakling who would only live for a few decades.

But being tricked like this only worsened Muzan's already irritated mood from all the constant requests for guidance.

Izumi gripped the sword at his waist, gritting his teeth as he looked at Muzan.

"I challenge you!"

Muzan, a wooden sword hanging at his waist, looked somewhat grim. "I'm not in the mood."

Out of respect for the dojo master, Muzan didn't want to kill him.

But Izumi clearly didn't realize this was Muzan giving him a chance to live. Seeing Muzan's demeanor, he felt scorned and roared in anger:

"What are you pretending to be!"

Muzan frowned, his dark expression causing Izumi to instinctively shiver. He quickly drew the iron sword at his waist, the blade shing as it left the scabbard. Looking at the wooden sword on Muzan's waist, he felt a bit more confident.