Demon Slayer: Strength Gained with Every Swing of the Sword

"Wow..."

Xiao Hei's entire body shuddered as an uneasy premonition gripped him.

"Xiao Hei, this time, I'll take it easy. Work a little harder for me, and get me and Xiao Bai to that place," Feng Yu said with a cheerful smile as he spoke to Xiao Hei.

"Wow... Master..." Xiao Hei sounded a bit aggrieved. After all, he had never imagined that one day he would be used as a means of transport.

"Alright, I won't make you suffer. Look what I have here," Feng Yu said, holding up three Marrow Cleansing Pills in his hand.

"As long as you take us to the place in the west, these three Marrow Cleansing Pills are yours," Feng Yu promised.

"Wow... okay!"

Xiao Hei's eyes were glued to the Marrow Cleansing Pills, unable to look away.

With a shudder, Xiao Hei's body began to swell up. In no time, he grew to the size of a bull.

Feng Yu leaped into the air, landing on Xiao Hei's back. As it was his first time doing this, and fearing it might hurt Xiao Hei, he almost fell to the ground.

After some time, he finally found a stable position.

"Wow... Master, I'm about to take off..." Xiao Hei shouted loudly.

"Wait... wait... take off slowly. It's my first time, so I'm a bit nervous..." Feng Yu said, swallowing nervously as he tried to calm down.

"I never thought that a person like me, who's not afraid of Demons, would be afraid of flying for the first time..." Feng Yu thought as Xiao Hei took off.

As Xiao Hei leaped into the air, Feng Yu's body pressed firmly against his back, tightly gripping his neck.

"Wow... I'm sorry, Lord Feng Yu. If I don't jump, I won't be able to fly," Xiao Hei explained, seeming to sense Feng Yu's discomfort.

Once they reached a certain altitude, the flight became smoother. Feng Yu slowly started to control his body and stand upright.

"The feeling of being in the sky is really something else. With my Wind-Panther Swift Flow technique, I could never have reached this height. Xiao Hei truly is amazing..."

"It looks like I'll have to rely on Xiao Hei a lot in the future..." Feng Yu thought as he felt the wind against his face, gazing at the scenery below, which resembled a series of beautiful landscape paintings.

This felt different from the view one gets from an airplane in his previous life. It felt as though the entire earth was beneath his feet.

Feng Yu's heart seemed to be enlightened at that moment.

It was now nighttime, and the pure white moonlight bathed both Feng Yu and Xiao Hei. The ground seemed to be covered in a layer of silver frost, making the scenery even more enchanting.

"It's a shame I don't have a camera, or I could record this beautiful sight," Feng Yu sighed.

The greatness of nature made human beings feel small and inspired awe.

Feng Yu looked at the bright moon in the sky, and a sudden realization seemed to dawn on him.

He slowly closed his eyes, drawing out the Sun Wheel Sword from its sheath. The pure green Sword glowed brilliantly under the moonlight.

His breathing became calm, and a different flow of energy began to emerge—different from the Water Breathing technique.

Light Breathing.

At that moment, Feng Yu entered a special state. The massive moon seemed to be right in front of him, so close that he could almost reach out and touch it. Yet there was a barrier preventing him from doing so.

If he couldn't pass through it, he would break through it with the Sword in his hand!

"Total Concentration: First Form of Light Breathing - Moonlight Slash!"

Feng Yu shouted as he suddenly opened his eyes. The speed at which he swung the Sun Wheel Sword increased, and the Sword began to emit a silvery glow.

"Faster... faster..." Feng Yu felt the barrier before him getting closer, just a little more...

"Ah!"

"Total Concentration: First Form of Light Breathing - Moonlight Slash!"

"Whoosh!"

A burst of silver light exploded outward, sending the wild beasts on the ground scattering in fear.

The silver light spread from Feng Yu's center, then compressed, and finally, with a powerful slash, Feng Yu struck the towering tree below them.

"Boom!"

A smooth cut appeared where the Moonlight Slash struck the tree, and it fell to the ground with a mighty crash.

That last strike had drained about seventy percent of Feng Yu's energy, and now he was panting heavily. But a smile appeared on his face.

He had finally grasped the first form of Light Breathing.

Although it had been exhausting to perform for the first time, he had already understood the core principles and breathing techniques. With proper training, he could master this technique, which was far more powerful than the Water Breathing technique's First Form: Water Surface Slash.

Indeed, Feng Yu had created his own breathing technique by adapting the principles of Water Breathing.

Though not as powerful as Water Breathing, it was uniquely his own.

"The key to Light Breathing is speed, power, and precision. I'm not sure how many times I swung the Sword, but it feels like I'm about to break the sound barrier..." Feng Yu reflected.

If it had been anyone else, their body would likely have given out by now. But Feng Yu's physical strength, regeneration abilities, and surging blood flow were exceptional.

"This journey... I really owe it to Xiao Hei..." Feng Yu thought, noticing that one of Xiao Hei's feathers had been cut off due to the intense power of the Light Breathing technique.

The spot where the feather had been was now bare.

Poor Xiao Hei, who had been forced to keep flying steadily despite the discomfort, in order not to interrupt Feng Yu's concentration.

If it had been any other day, Xiao Hei would have probably fled in fear.

Seeing this, Feng Yu's heart ached, and he said, "Sorry, Xiao Hei, you've worked hard. Once we reach our destination, I'll give you a few more Marrow Cleansing Pills to make up for the feathers you lost."

Upon hearing there was a reward, Xiao Hei's whole body trembled, and his speed increased by another notch.

"Wow... Wow..."

His loud calls echoed across the sky.

The people living in the forest looked up and began to revere Xiao Hei as a deity.

If Feng Yu knew this, he would probably exclaim in disbelief. He might even jokingly complain about how the people from the little island country had such vivid imaginations.

Truly, the birthplace of anime and the second dimension.

As the night grew darker, Feng Yu lost track of how much time had passed and unknowingly drifted off to sleep.

His steady breathing and the subtle energy techniques in his body worked on their own, replenishing the spiritual energy he had expended throughout the day.

Meanwhile, his Total Concentration Breathing shifted back and forth between the Water Breathing and Light Breathing techniques.

The interchange between the two was something Feng Yu would need to practice and refine.

Total Concentration Breathing had two stages: the combat state and the continuous, all-day state—Total Concentration Breathing (Constant), a sustained, ongoing practice of Total Concentration.

At this moment, Feng Yu had just begun to enter the Constant phase and wasn't yet proficient.

And so, Feng Yu slept soundly on Xiao Hei's back until a beam of light from the east woke him up...

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