Prince of Tennis: A new Hextech Crafting System is refreshed every week.

"The random motion exhibited by tiny particles suspended in a liquid or gas due to constant random collisions with surrounding molecules."

"Movement never stops, its trajectory is unpredictable and full of twists and turns."

"...This is Brownian motion."

Kitahara Akira suddenly remembered this term he had learned before, and subconsciously recited its detailed definition. He should have forgotten all of this from his high school physics teacher long ago.

His current state is strange.

I don't know whether to call it good or bad.

On the bright side, all those things I had long forgotten suddenly came back to mind.

He even remembered the incident from the sixth Wednesday of the second semester of fifth grade, during the third period of math class, when the young, newly-graduated math teacher forgot to zip up his pants when he went to the toilet and was stared at by the whole class for the entire period.

On the downside, his brain was working at an excessively high frequency, as if countless pieces of information were flooding into his mind in an instant, putting him under unimaginable strain.

It's like being hit on the head with a heavy hammer, and then simultaneously having dozens of tiny needles constantly pricking every nerve in the brain.

Fortunately, with the passage of time...

He gradually got used to the feeling of his mind being filled with this massive stream of data, while the sound of a violin coming from the second floor of the house next door still tormented his ears.

It's jarring!

Because of Hextech, all his sensory organs also received a twofold increase in efficiency, since learning efficiency inherently includes the efficiency of receiving external information.

Therefore, he also became exceptionally sensitive to sound.

What was just ordinary violin playing to others was something he could never accept.

How should I describe it?

It felt like being torn back and forth on a piece of foam board with a rusty saw—sharp, dry, and with each pull of the bowstring, his heart felt like it was about to stop beating.

Can't help it.

"Knock knock!"... "Is anyone home?"... "Knock knock!"...

Kitahara Akira went directly to the building next door and knocked on the door.

The piano music stopped for a few minutes, and then the door opened with the sound of slippers on the floor.

The person who came was a girl with long pink hair, wearing a beige hooded sports jacket with a blue background and a bow at the neckline.

With a gentle smile and beautiful features, she naturally evokes a sense of goodwill and is very approachable.

She was clearly surprised and unfamiliar with Kitahara Akira, who had suddenly arrived.

Kitahara Akira didn't care about any of that, pointed to his room, and said directly:

"I live next door, are you playing the violin?"

Following the direction he was pointing, the girl immediately realized that her piano playing might have disturbed the neighbors, and her cheeks flushed. "Did I disturb you just now? I'm so sorry, I just moved in and I don't know about soundproofing yet."

Then, somewhat hesitantly, he spoke cautiously.

"However... since it's an assignment given by the teacher, I guess... I'll need to practice a little longer."

"Please forgive me, I will finish as soon as possible! I'm so sorry!"

"Do you practice every day?"

"Well......"

The girl's apology was tinged with embarrassment, and she said somewhat shyly, "Before the start of school... that's true."

Upon hearing this, Kitahara Akira frowned slightly and said:

"If you don't mind, please let me take a look at your instrument."

Given Momoi Satsuki's personality, even though she is outgoing and gets along with everyone, she would never let a stranger into her bedroom, much less let anyone touch her violin.

However, for some reason today...

Inexplicably, a neighbor he was meeting for the first time was allowed into his room, and he even personally handed the violin to the neighbor.

......

Kitahara Akira put the tennis ball in his trouser pocket, where it still stayed close to his body.

Then, place the violin on your shoulder, press your fingers on the fingerboard, and pull the bow across the strings to produce a sound.

"Slurp~ Come here... Mimi~ Slurp~"

His brows furrowed again.

What he heard wasn't actually unpleasantness, but rather a sense of awkwardness.

The sound was a mixture of correct and incorrect; the waveform suddenly became chaotic and jittery halfway through.

It's like a tiny pebble stuck in a bicycle chain, making a continuous, inappropriate, and chaotic sound with every pedal stroke.

"Is something wrong?"

Momoi Satsuki asked.

The D and E strings.

Kitahara Akira did not answer, but played the string again, pinpointing the problematic string in his mind. Then he put down the bow, stood the violin upright, and slowly turned the tuning pegs on the headstock with his fingers.

In his previous life, he had studied violin for a few months in an after-school interest class.

These memories, long forgotten in the past, have become exceptionally clear today. The scene of watching the violin teacher tune the violin is still vivid in my mind.

Kitahara Akira gently plucked the strings, following the steps he remembered.

Collapse... Collapse...

Although he didn't know what the standard pitch was and lacked specific theoretical knowledge, the sound of the music teacher tuning the piano that weekend, and the vibration of the strings, left a reference point in his memory.

collapse.

"The frequency is still a bit too low."

Kitahara Akira tightened it a little more.

collapse.

Kitahara Akira subtly twisted his fingers, then gently plucked the string, and a sound exactly as he remembered rang out from the string.

"Slurp!"

This is it.

perfect.

That sense of order, of everything being back on track and perfectly organized, returned, like the final piece of a jigsaw puzzle being put together, complete and harmonious, which gave his brain an extreme sense of pleasure.

Then he tuned the remaining E string.

A few minutes later.

Kitahara Akira picked up the bowstring and played the same tune again.

Although his violin playing technique was mediocre, the pure tone that was just right and the stable control that was like a precision machine made Momoi Satsuki's eyes light up.

She looked at Kitahara Akira in surprise: "Can I try?"

Kitahara Akira handed her the violin, and Momoi Satsuki, as soon as she got it, put on the bow and skillfully played the piece she had practiced before.

The sound of the zither was as pure as water.

There are absolutely no impurities.

The music was smooth and harmonious, as sweet and beautiful as a clear spring flowing from the mountains and forests, and then it came to an end.

Momoi Satsuki opened her eyes, delighted and surprised: "You have perfect pitch?"

I have always taken good care of my instrument.

Unless tested with professional equipment or by someone with perfect pitch, it is very difficult to detect these almost imperceptible minute differences in pitch.

Kitahara Akira tuned the entire thing by hand from beginning to end, never using an electronic tuner.

Then the truth is quite simple.

Kitahara Akira didn't react much to Momoi Satsuki's surprise. He let out a long sigh of relief, as if a thorn that had been stuck in his heart had been pulled out, and felt extremely relaxed.

The problem has been resolved, and he has no intention of staying any longer.

Kitahara Akira went out and downstairs.

Seeing that he was about to leave, Momoi Satsuki quickly said, "My name is Momoi Satsuki, what's your name?"

"Kitahara Akira"