Chapter 335: His Weapon Hides Such a Secret Technique!
Children's fingers always like to poke and prod randomly.
As a result, situations like this often occur: in some parks, there are metal blocks on certain equipment with holes in them, and once a finger is inserted, it can't be pulled out.
Generally, the common method to extract a stuck finger is to apply some lubricating liquid like soapy water.
This makes the contact surface between the finger and the constricting metal slippery, facilitating the finger's removal. Hence, this method is often used when fingers get stuck in holes.
However, not all cases of stuck fingers can be resolved with soapy water or similar lubricants. On the contrary, adding liquid might worsen the situation, making the finger even more tightly stuck.
So, what exactly causes this?
This occurs when the hole the finger is inserted into is enclosed.
The earlier scenario, where liquid lubrication helps, involves the finger being stuck in a ring. The current case, where adding liquid tightens the grip, involves a hole.
To illustrate, the former is like having a finger stuck in a ring, while the latter is akin to inserting a finger into a test tube.
In such cases, adding liquid may fill the gap between the finger and the inner wall of the test tube.
Since the finger is not perfectly smooth, tiny gaps exist between it and the test tube's interior, allowing air to enter. If liquid is added, these gaps are filled, displacing the air and strengthening the adhesion between the test tube wall and the finger.
Consider two pieces of glass placed together under two conditions: one dry and the other wet. Which scenario makes it easier to separate the glass?
The answer, of course, is the former.
In the latter case, water fills the gaps between the glass pieces, eliminating the atmospheric pressure between them and allowing the external air pressure to press them together.
Inserting a finger into a test tube and adding moisture creates a similar situation.
If the finger is inserted too forcefully, the air inside is rapidly expelled, preventing it from flowing back in and resulting in very low pressure inside the test tube.
Consequently, the finger is held in place by atmospheric pressure and cannot be pulled out.
This is similar to how a suction cup works.
A suction cup sticks to a smooth wall because the air is forced out, creating a pressure difference that keeps it adhered.
If you try to pull the suction cup, it might seem to loosen slightly, creating a small gap between the cup and the wall. However, due to the pressure difference, it will snap back into place once released.
Similarly, a lubricated finger stuck in a test tube may be partially pulled out but will eventually slide back in due to the pressure difference.
Forcibly pulling it out could result in injury.
So—
"It worked, that's great, President~"
A cute girl with reddish-brown wavy hair sighed in relief.
She was one of Sona's servants—Meguri Tomoe, who had suddenly contacted Sona, saying her Sacred Gear was stuck and she couldn't remove it, so she asked for advice on how to get it off.
Tomoe's Sacred Gear was a sword, and the so-called jamming was when the blade suddenly got sucked into the scabbard and couldn't be drawn out.
The reason for this was actually a secret skill of this Sacred Gear that he hadn't disclosed, hoping she could research it on her own.
This secret skill was that the jammed sword was actually due to a special magical magnetic suction formed inside the scabbard.
As long as the user injected more magic power into it, causing the internal pressure to reach a certain level, the sword would eject like lightning, as if accelerated by electromagnetic force.
Then, by utilizing this speed, one could perform an unimaginably fast iaido slash, powerful enough to tear through space.
"President, please convey my thanks to Renji-sensei too."
"Mm."
Sona responded with a smile.
Upon closer inspection, one could see her smile was strained.
It wasn't exactly forced cheerfulness, but more like an awkward grin, because she was in a particularly bad situation herself, somewhat similar to how Tomoe's sword was jammed.
So she was also extremely nervous, worried that Tomoe might suddenly want to thank her with a hug.
This child was often like this.
If she suddenly hugged her, she would realize there was something wrong with the chair she was currently sitting on.
It seemed like she wasn't actually touching the chair, but rather sitting on an invisible transparent air cushion, separated from the chair itself.
In reality, this air cushion was enchanted with optical camouflage-like magic to conceal its true nature.
Tsubaki, who was nearby, knew the truth about this.
"Speaking of which, President, is this a new product you brought from the Underworld?"
Another of the president's servants, the girl Hanakai Momo, asked curiously.
Because the president had been trembling constantly, as if enjoying a massage chair, and it looked particularly comfortable.
"Can I try sitting on it?"
"No!!!"
The president refused, her reaction overly intense.
"O-okay, I understand"
Momo shrunk her neck back.
Suddenly, a huge magic circle expanded—it appeared to have been activated by the president, as the magical fluctuations originated from her—and everyone was transported to the Training Space.
So, is the president personally checking how far they've mastered their Sacred Gears now?
"Let me see how far you've mastered your Sacred Gears"
Such words reached the ears of Momo and the other girls, who looked around in confusion but couldn't find the source of the voice.
Right, this voice didn't belong to the president—it was Renji-sensei.
He was probably watching from elsewhere through magic.
"Okay" *n
Thus, numerous mechanical monsters appeared in this training space, reportedly developed by Miss Seekvaira.
In the blink of an eye—
"President, watch out!"
Suddenly, a stray attack shot toward the president.
But the president seemed not to hear, as if lost in thought, distracted, or dazed.
The vice president was the same.
Boom—!
It hit—no, it didn't.
However, it did expose some kind of camouflage, leaving everyone momentarily stunned.