A person in Japan, a sword that soars to immortality.

Five days later, in Heiwa-cho, at the residence of the Yamada Asaemon family, a samurai household.

Although they were servants who were not qualified to meet the shogun, the Yamada family built a very large samurai house using the money they earned from selling medicine.

The entire courtyard contains not only the main room where the Lord resides, but also the prayer hall and smaller rooms for others to live in.

Inside the sukiya tea house, Taiichi was leaning against the wall, engrossed in reading a Daoist canon.

About two meters away from him, Senta and Fuzhi were holding teacups in their hands, slurping their tea with obvious enjoyment.

"Slurp, ah~ Senior Brother Taiyi's tea is so delicious."

Senta tilted his head back, his chubby little face with his eyes narrowed into slits as he savored the taste in his mouth.

Fu Zhi, who was standing to the side, nodded heavily after hearing what his tea friend said, and then said, "I don't know when it started, but after each dissection, the thing I look forward to the most is being invited to have tea by my senior brother."

"Take some if you like, I have plenty more here."

Taiyi's voice traveled across the book and reached their ears.

"No, thank you." Fu Zhi put down his teacup, then sat up slightly, frowned, and looked at the ceiling, saying, "Drinking tea alone feels completely different from drinking tea with my senior brother."

"Huh? Fu Zhijun feels the same way? I thought I was the only one who thought that way."

Senta scratched the back of his head and said with a smile.

After hearing their conversation, Taiyi tilted his head, avoiding looking at them through the books.

From the perspective of observing Qi, the spiritual energy floating in the air was being continuously and slowly integrated into his body due to his breathing technique.

Meanwhile, a considerable amount of subtle spiritual energy was entering Fu Zhi and Xian Tai's bodies through their mouths and noses, following their breaths.

So it turns out they were just trying to steal my spiritual energy.

Having figured out the reason, Taiyi didn't make a fuss. He just smiled faintly and continued reading his book, then suddenly asked, "Didn't you invite Sakichi to tea today?"

The question was raised, but no answer was received.

Xiantai and Fuzhi exchanged a glance, their lips opening and closing as if they wanted to say something but couldn't.

As the Yamada family's most steadfast tea-drinking trio, there's only one reason why Sakiri might be absent.

"She just came back from the execution ground in Suzunomori."

After a moment of silence, Fu Zhi finally spoke up and answered.

Taiyi paused for a moment as he turned the pages of the book, then sighed softly, "I see."

The responsibility that comes from the lives you have taken?

How can one kill someone without making it seem like nothing happened?

How exactly does it become possible to no longer feel confused and fearful when wielding a knife to kill someone?

"The reason for all of this is that you haven't found the meaning in killing people." Taiyi muttered to himself, then opened the system, checked his data again, and thought to himself:

"Those who die by my hand, I will tell them that I will take your deaths to witness a wider world and reach a realm that no one has ever touched."

[Sword Control System]

Name: Yamada Asaemon Taichi

Age: 20

【Lifespan: 53】

[Energy: 73.5 (+)]

Qi and Blood: 10.5 (+)

[God Soul: 7.5 (+)]

[Breathing Technique (+): Roar of the Shadow Tiger (+)]

[Martial Arts: Test-Sword Style Secret Sword Modified (+)]

【Title: Nameless Ronin (When facing enemies, the only thing they'll notice about you is your good looks)】

[Common points: 5]

"Since upgrading the ordinary breathing technique to the Roar of the Yin Tiger, all three of my attributes have increased significantly. This is the power of an advanced breathing technique!"

Taiyi closed his eyes to sense the change, and upon seeing the growth data, a slight smile appeared on his lips.

The so-called breathing method involves absorbing the spiritual energy between heaven and earth into the body, and then the cells in the blood combine with the spiritual energy, which then flows throughout the body to strengthen it.

Furthermore, specific breathing techniques, in addition to their overall strengthening effect, can also stimulate specific organs, refining attributeless spiritual energy into attributed spiritual energy, thereby producing additional effects.

My own Yin Tiger Roar Breathing Technique focuses on stimulating the kidneys to strengthen the body with spiritual energy, with an emphasis on increasing vitality.

"But if this continues, it will cause an imbalance in my three-dimensional data, which will then evolve into a fatal flaw."

After silently reciting the words in his mind, Taiyi's mind was filled with images of characters from the original work and the events that happened to them.

Taiichi rubbed his chin, combining the characters' performance in battle with the data he had seen, as various thoughts began to collide in his mind:

"Zoche and the others all have a higher level of essence than qi and blood."

"This also explains why what would be fatal to an ordinary person could allow them to continue fighting after suffering such an attack."

"But how do you explain the sudden burst of power during combat...? That's it, that must be it!"

Tai's eyes lit up, and goosebumps rose all over his body.

According to the description in the Taoist canon, humans possess three treasures: essence, energy, and spirit, and these three substances can be transformed into one another.

As Mei once said, excessive use of "Tao" in battle can lead to exhaustion or even death.

Essence is vitality, while Qi and blood represent fighting power.

A sudden surge in one attribute certainly doesn't happen out of thin air; it must be due to the sacrifice of two other attributes to achieve this explosive result.

"Just like Muzan, after being poisoned by Tamayo's aging poison, he aged 9000 years instantly. As a result, in order to fight the poison and restore his vitality, his blood and energy were greatly depleted, his fighting power dropped sharply, and he couldn't even split his body."

"There's also the setting that all the striped warriors don't live past 25 years old. This is because they convert all the vital essence that is linked to life force into blood and qi to enhance their combat power."

"As someone with a systematic approach, I must control the growth rate of the three-dimensional attributes to avoid this situation."

"In that case, I need another breathing method to accelerate the increase of Qi and blood levels."

"How do these people increase their Qi and blood, that is, how do they increase their combat power...?"

Behind the book, Taiyi closed his eyes and tried to find some details about Qi and blood from his memories.

Increased body temperature...increased combat power...rapid heartbeat...increased blood flow.

Therefore, we also need a breathing method that stimulates the heart!

Taiyi opened his eyes again, his gaze falling on the neatly arranged lines of scriptures in the Daoist canon in his hand.

The heart is fire. From fire arises liquid, called true water. On the surface of water, the true yang energy secretly attaches, and thus the yang dragon is formed.

"So that's how it is. All my hard work has paid off; I've finally figured out the technique I need."

"System, give me more!"

Taiyi added 1 point to the breathing technique option, but there was no reaction.

He then added another point, but there was still no response. He added another point, and finally, a few words appeared vaguely after "The Roar of the Yin Tiger".

"Add one more point!"

After adding the text, the characters became clearer, but they were still not fully displayed.

"Just one more step! If this doesn't work... I really hope it doesn't fail!!!"

"System, add more!"

As the last bit was added, Taiichi's heart began to beat faster, his muscles tensed involuntarily, and his breathing became heavier.

If this still doesn't work, then he'll have to discuss with the other members of his tribe and go kill someone again.

But this is the kind of situation he doesn't want to happen.

In just a few seconds, it felt like a year had passed for Taiyi.

After a period of violent fluctuation, the blurry words finally became clear.

"Phew, thankfully it worked."

Taiyi let out a long breath, looked at the system again, and the smile on his lips grew wider and wider.

[Sword Control System]

Name: Yamada Asaemon Taichi

Age: 20

【Lifespan: 53】

[Energy: 73.5 (+)]

Qi and Blood: 12.5 (+)

[God Soul: 10.0 (+)]

[Breathing Techniques (+): Roar of the Yin Tiger (+), Chant of the Yang Dragon (+)]

[Additional effects: Rapid recovery; Possession burning;]

[Martial Arts: Test-Sword Style Secret Sword Modified (+)]

【Title: Nameless Ronin (When facing enemies, the only thing they'll notice about you is your good looks)】

[Common points: 0]

"I never expected that after acquiring the new breathing technique, not only would my Qi and Blood levels increase, but my Divine Soul would also improve, and I would even gain new attributes!"

Taiyi's hands, which were holding the Daoist scriptures, began to tremble involuntarily.