A crossover anime, where people are in Classroom of the Imaginary Era, and behind the scenes, the ki

Koro-sensei casually wiped away a little sticky liquid seeping from his cheek and continued to fulfill his duties as a teacher:

"Although this method of concealment cannot physically erase one's own existence like Yotsuya Miko's technique."

"But under the cover of the afterimages of battle and the smoke and dust of the environment, this brief moment of presence disappears, enough to cause the opponent to misjudge."

"It can be said to be an essential skill for survival and surprise attacks."

After listening to this explanation, everyone present seemed to be deep in thought.

At this moment, Su Wei slowly descended from mid-air.

He was not annoyed that Koro-sensei had cheated and escaped, nor did he show any sign of drawing his Enma sword to fight again.

Upon seeing this, Koro-sensei stopped joking.

"As you can see."

"Qi, besides being like Su Wei, who can glide through the air by using the recoil force of qi even if he doesn't have the ability to fly."

"It can also stimulate cell vitality and prolong the life of the dying; it can also develop a qi blast with a tracking function by injecting intention; it can even synchronize with the user's mental state and become stronger as the fighting spirit increases."

Koro-sensei's gaze swept over everyone present:

"In short, this is a technique with no entry requirements, and anyone should invest time in practicing it."

"However, to unleash its full potential, a strong body is essential as a vessel. Outside the Black Ball testing grounds, without using those special tools, your physical abilities will drastically decline, causing the 'qi' you cultivate to be unable to withstand the strain on your meridians and thus unable to exert its full power..."

"Therefore, the version of the cultivation technique I have revised now retains its original characteristics while specifically adjusting the difficulty and adaptability of cultivation."

"It allows you to continue safely drawing upon your full ki even when your physical abilities decline. Essentially, this is a modification specifically designed for you."

Upon hearing this, all the students present showed joy on their faces.

Su Wei, however, seemed not to hear him and stared at Koro-sensei with some curiosity, asking:

"Koro-sensei, was that all the moves you just used? Is there anything else you'd like to spar with and demonstrate?"

Upon hearing this, Koro-sensei's round face, which had just returned to normal, stiffened for a moment.

He waved his tentacles repeatedly, somewhat amused and exasperated.

"No need for now, no need!"

"The rest are just variations of manipulating qi. In terms of destructive power, they're not much stronger than the 'Koro-sensei Beam' from before, so I won't waste your time here any longer."

What a joke!

He immediately unleashed his ultimate weapon, a combination of research from two major world systems.

As a result, Su Wei withstood the attack head-on, and apart from a hole in his clothes, he was fine after dusting himself off.

On the contrary, he himself was almost pinned to the wall by a javelin.

If this continues...

Wouldn't his authority as a teacher be completely shattered? Know when to stop, know when to quit while you're ahead!

Koro-sensei wiped non-existent beads of sweat from his forehead and urged:

"You'd better hurry up and go find your contracted beast to see what exactly happened in that mirror."

"It's best not to miss out because of this."

Su Wei saw through it but didn't say anything, going along with it:

"Then I'll take my leave first. After I've finished dealing with this matter, I'll carefully read your improved technique explanation, Mr. Koro."

Koro-sensei nodded repeatedly, waving his tentacles as if he were sending away a plague god.

Seeing Suwei turn around, he changed into the armor of Kamen Rider Odin.

Koro-sensei inexplicably breathed a long sigh of relief.

'At least I've preserved my last shred of dignity as a teacher...'

At this time.

Long Yuanxiang suddenly leaped forward.

He turned to Koro-sensei and said:

"Koro-sensei, neither Ripple nor 'Ki' suits my fighting style very well. I think I'll go with Su Wei to the Mirror World. In case we run into any trouble, we can look out for each other."

Regarding Long Yuanxiang's statement.

As an extremely enlightened teacher, Koro-sensei has no problem with it.

And so, as everyone watched them go.

Long Yuanxiang followed Su Wei into the mirror world.

To Longyuan's surprise...

As soon as he stepped inside, he discovered that the golden phoenix, which should have been soaring high in the sky, had somehow folded its wings and was standing quietly in front of Su Wei.

It seemed as if they had been waiting for them there for a long time.

Long Yuanxiang couldn't help but raise an eyebrow: