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

Upon hearing Koro-sensei's question, Sakayanagi Narumi was slightly taken aback, then shook his head with a wry smile.

He pushed up his glasses and replied with a touch of emotion:

"You flatter the school too much, Mr. Koro."

"This is not the result of the school's efforts... It is simply the students who participated in the Black Ball Special Exam who, through their own efforts risking their lives, brought out the Ripple and Qi techniques that can be practiced by the public, and then selflessly shared them with everyone."

At this point, Sakayanagi Shigemori's tone carried a hint of self-deprecation:

"To be honest, we old bones who are almost halfway to the grave are all thanks to these students for being able to come into contact with this kind of power."

Upon hearing this, Koro-sensei's smile softened slightly.

"Nuiya huhuhu—"

"With such a broad mind, it seems that... I, as a teacher, don't need to worry too much about the most basic issues of values ​​and morality."

He changed the subject, his tone becoming serious:

"Well then, let's leave this small talk here, Mr. Chairman."

"As an 'adult' who is also responsible for guiding children, could you briefly describe to me... the current reality of your world?"

Koro-sensei's tentacles curled slightly: "To be honest, when Gantz approached me, he told me personally... that without his intervention, your world probably wouldn't have even lasted until the day I 'die of old age.' That's why I agreed to come."

Upon hearing this, Sakayanagi Narimori's pupils contracted sharply, clearly surprised by what he had just heard.

After all, as a "new teacher" personally arranged by the Black Sphere God to descend, Koro-sensei carries information that deserves special attention from the school, no matter how you look at it.

Sakayanagi Narimori naturally learned some basic information about Koro-sensei from Su Wei and the others.

He knew very well that Koro-sensei's life would come to an end next March, at which point it would destroy the Earth due to the rampage of antimatter cells...

In other words.

Does GANTZ mean that the world they're in won't even last until next March?!

Immense pressure hung over Sakayanagi Narumi like a dark cloud.

He frowned deeply and sighed helplessly:

"Has the situation deteriorated to this critical point...?"

"But in fact, just a few months ago, our world was just an ordinary everyday world with nothing."

"There is neither extraterrestrial technology beyond our comprehension, nor this ancient life cultivation method... and naturally, there are no man-eating monsters."

"If we were to pinpoint the exact time when this world changed..."

As Sakayanagi Narumi led Koro-sensei on a stroll down the corridor, he was lost in memories:

"It should be during this year's 'Spring Koshien Selection Tournament,' which is around late March."

"At that time, sporadic sightings of 'parasites' began to appear among the public. However, there weren't many unusual events at the time, and the government used methods to conceal the information in order to maintain stability."

"Unexpectedly, in the short period that followed, the number of unusual events escalated rapidly. Not only did the number of monsters explode exponentially, but all sorts of previously unheard-of species also appeared..."

"This situation continued to worsen until the end of April, when the black sphere descended upon our Advanced Education School, bringing with it the so-called 'Special Exam,' which barely managed to contain those monsters within a certain range."

Sakayanagi Arisu paused, as if carefully considering her next words.

After a moment, he continued:

"The black ball restricts us; every week, we must select some people from each class to participate in the trials as test takers."

"After the mid-term 'large-scale test on the deserted island,' the black sphere also fulfilled its previous promise and drove out all the monsters that had invaded our world."

"After that incident, we have indeed never detected any trace of the monster in the real world again."

"But strangely enough... in subsequent cross-disciplinary exams, there's still a chance that some people will become 'intruders' in the exam room..."

Sakayanagi Shigemori turned to Koro-sensei: "I also tried to ask him about the reason for the black ball."

"Its explanation is that our world itself has already developed 'cracks' connecting it to other parallel worlds."

"Could it be... that the catastrophe that Gantz spoke of, which could destroy the world, is related to this so-called rift?"

"But if it's just a simple spatial rift, why are all the intruders chosen by the Black Sphere connected to those who are involved in the Black Sphere exams?"

After listening to this detailed account...

Koro-sensei rubbed his chin with two tentacles, and a rare thoughtful expression appeared on his usually relaxed round face.

After thinking for a long time, he still wasn't quite sure about the answer.

He could only offer one guess:

"If it's really as you say, Chairman..."

"Then perhaps this so-called 'gap' is not as simple as you imagine."

"Is it possible that your world is not simply rubbing against other worlds... but is actually undergoing 'fusion'?"

"GANTZ's appearance and expulsion only temporarily cleared away the gloom for you and forcibly delayed the process. When the time is right, or the test is over, it will no longer interfere."

Koro-sensei shrugged his tentacles, his tone returning to its lighthearted manner:

"Well... but all of this is just my association based on the information you provided, Chairman, and the female student I saw at the admissions office earlier who seemed to be wearing a uniform from another school."