Compared to the more powerful conceptual Spirit Armaments, it was clear that Kanae was more interested in the Breathing Style Su Mo mentioned.
Kanae had tried magic.
By purchasing the item, she could indeed successfully refine mana, but she couldn't teach the same technique to others.
Neither her younger sister Shinobu, nor Kanao, nor any of the other Hashira could learn this power.
Rin Tohsaka had even helped investigate this point at the time, and the conclusion they reached was that the physical constitution of humans differed from world to world.
But Breathing Styles were different. A skill improved upon the foundation of the original Flame Breathing Technique would surely be a perfect fit for the physical constitution of humans in her world.
In other words, this power could very likely be taught to others.
If her strength alone wasn't enough to slay the Demon King, Muzan Kibutsuji, then if all the Hashira worked together, they might be able to create a miracle.
Su Mo could guess Kanae's thoughts with his eyes closed.
Therefore, without any unnecessary words, he directly uploaded the skills he had comprehended.
Su Mo: "The skills I comprehended earlier are all up in the store. See for yourself."
As soon as he said this, everyone clicked on the Group Store interface. Then, they saw four brand-new items all at once.
Kanae: "Water, Fire, Wind, Thunder, and Earth... The Five Spirits Breathing Style actually includes the final base style, and even has the techniques of the long-lost origin of all Breathing Styles, the Sun Breathing?"
Kanae: "How is this possible?! Didn't Lord Su Mo only purchase the Flame Breathing?"
After reading the product description, Kanae was completely stunned.
Compared to the existing styles, the legendary Sun Breathing was the true power that could counter demons.
Unfortunately, the Sun Breathing had long been lost, and no one could master this power anymore. She never expected to see it reappear here.
Before Su Mo could comment on Kanae's surprise, Erica shrugged.
Erica: "It's just extrapolation. For Lord Su Mo, is this really something to be surprised about?"
With just a single magic spell, Su Mo had practically mastered an entire system of conceptual Spirit Armaments.
Compared to that feat, reverse-engineering an entire system from a single Breathing Style was nothing to be surprised about.
The system of Breathing Styles was far simpler than the system of Spirit Armaments.
Kanae: "That's true."
After taking a deep breath, Kanae calmed down.
To be disrespectful for a moment, even the genius who created the Sun Breathing was probably not comparable to Lord Su Mo in terms of wisdom.
It was only natural that he could reverse-engineer the entire system.
At this point, Su Mo also gave a simple explanation.
Su Mo: "I just reverse-engineered the Sun Breathing from the Flame Breathing, and then successfully deduced the other Breathing Styles from it."
Su Mo: "The five Breathing Styles of Water, Fire, Wind, Thunder, and Earth are actually degraded versions compared to the pure Sun Breathing. However, those with insufficient life force are not suited for the traditional Sun Breathing. Forcing its use will inevitably consume one's life."
Su Mo: "To lower the barrier to entry, I designed the Five Spirits Breathing Style. It retains the killing power of the Sun Breathing while greatly reducing the drawback of life force consumption."
Su Mo: "Although its ceiling isn't high, it should be sufficient as a combat-type skill."
After hearing Su Mo's words and reading the product description, Rin Tohsaka tilted her head, a large question mark appearing above it.
Rin Tohsaka: "Ceiling isn't high?"
Rin Tohsaka: "Lord Su Mo, you call a power that costs ten thousand points and can at least reach Tier 2 strength something with a 'low ceiling'?"
A power level of Tier 2 was already considered the pinnacle of humanity in both the Campione! world and her own Type-Moon world.
Even a Grand-ranked Magus from the Clock Tower might not possess that level of combat strength.
How was it that, in Su Mo's eyes, it seemed to be somewhat looked down upon?
Hearing Rin's words, Kanae, who had been overjoyed just moments ago, suddenly stiffened.
Wait, how much did it cost again?
On the other side, hearing Rin's confusion, Su Mo shook his head and explained.
Su Mo: "I said the ceiling isn't high because the entire framework of the Sun Breathing system itself has a major flaw."
Su Mo: "A power that can only be used to consume life force, but cannot replenish it, has a problem in its fundamental design. If based on the existing structure, the upper limit for an ordinary practitioner is pretty much set in stone."
The Sun Breathing was a technique created by Yoriichi Tsugikuni. Its core was essentially to help someone with an extraordinary talent for life force to expend their excess energy.
For someone with an abnormal constitution like Yoriichi, the Sun Breathing was naturally not a problem.
But for ordinary people, they simply couldn't withstand such power and consumption, so they could only create derivative styles that suited them.
However, no matter how they derived and improved it, they could not change the fact that its consumption was greater than its replenishment.
In the world of Demon Slayer, this Breathing Style might have its positive aspects, but for Su Mo, it was by no means a path that led to greater strength. It could be used as a "technique," but not practiced as a "method."
Su Mo: "Therefore, I completely overturned the Sun Breathing and created a new method with 'health preservation' as its core."
Rin Tohsaka: "Are you referring to this 'Pure Yang Qi Refinement Method'?"
Su Mo: "Correct."
Su Mo: "I recommend using the Pure Yang Qi Refinement Method as the foundation and the Five Spirits Breathing Style as the application. This is the way to increase one's life force and elevate one's life level."
The Pure Yang Qi Refinement Method focused on health preservation, while the Five Spirits Breathing Style focused on killing.
An increase in life force was of great help, whether for strengthening one's own constitution or for increasing one's total mana.
With Rin's intelligence, she naturally understood the advantages of the Pure Yang Qi Refinement Method immediately.
Compared to skills that consumed life force or mana, a method that could raise the upper limit of one's own constitution was the true treasure!
It was just like a cultivation method from a manhua.
If this were anywhere else, it could be called a secret that was never to be passed down!
Extremely excited, she immediately clicked on the product page for the Pure Yang Qi Refinement Method.
However, the moment she saw the price, she froze on the spot.
"Huh?"