The weather was pleasant.

It was neither hellishly hot nor chillingly cold. Just an ordinary summer morning.

As my seat was next to a window, I was bathed in sunlight, making me feel drowsier than usual. The monotonous voice of my history teacher made this even worse. To me, merely remaining awake was a wearisome task.

But the class was in session. If I doze off right now, the chance of me getting into trouble were all-time high. This is how bad my luck is. Moreover, the teacher, Yamada, was notorious for punishing his students more than any other.

And to sum it all up, my luck was crap, my teacher is a sadist, I want to sleep really bad and the weather is nice. If I was an optimist, I’d have cheered over the nice weather today. Unfortunately, according to this morning’s weather report, it’ll rain quite soon.

“Amano, I want to hear your report,” came his voice from the desk. Man, this guy sure is finished. Reading his messily history report before the whole classroom must suck a lot. By the way, Amano is me. Damn.

“Of course,” I said and stood up. Thankfully, the homework for today was done. I may look like a slacker, but looks amount only to ninety percent. Does this make me a ninety percent slacker? Probably.

Well, even a slacker can do something from time to time. I took my report and looked at those chicken scratches I called handwriting. At this day and age, do we really need to write everything manually? Sounds bothersome, if you ask me.

“Your home report is about the events that took place two years ago, correct?” said the teacher. For someone who had a premature balding and horrible fashion sense, he had quite an intimidating aura. Behind those glasses of his was the look of a true yakuza.

I nodded and cleared my throat. It’s now or never.

“Two years ago, people from across the world, mainly middle and high school students with a few exceptions, vanished in an event now commonly known as the Multi-Reality Interference or the Interference for short, when alternative world that existed on separate planes merged for an instant,” I said, reading without any feelings other than mild boredom in my voice. My classmates, on the other hand, all showed quite a broad range of various emotions. This was a delicate topic to them. Not that I’ve any right to complain.

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“People from our world were summoned as heroes to solve various conflicts that the citizens of parallel worlds possessed. I think they were just too lazy to deal with them on their own, though…”

“You bastard! What did you tell about the beautiful princess that waits me there?!”

“He isn’t incorrect, though. I mean, weren’t we all forced to fight for them against our wills?”

“Quit complaining. What we did was just and therefore right!”

“Pipe down! I’m trying to sleep here!”

Again, entire classroom became agitated. Since our personal experiences diverged greatly, everyone had their own version of those events. To be honest, I was probably the only one with any bias about this topic. Also, who the hell is sleeping there?

Then, we all went silent as the teacher smashed his desk into pieces with one slap. Yeah, Yamada was one of those “exception” heroes, too. Just how monstrous was his strength. And I’m pretty sure his desk was enchanted to be unbreakable, too.

“Ahem,” I said. “Like I said, people were summoned to alternative worlds. Due to the local government’s inability to deal with the crisis at hand, they were forced to request aid from somewhere else. There, ordinary humans were named legendary heroes and thrown into battle against the demonic forces.”

At this, some of my classmates started sending me dirty looks, prompting me to keep going or feel what the ground tastes like after the school was over.

“In addition, while the majority of summoned people fought against the demons, known as hero-types, other had different tasks like helping with restoring a ruined country or dominating the world. Those are either known as devil-types or abnormal-types.”

This time, I heard the sound of someone unsheathing their claws with the sound an angry dog makes added for a good measure.

“During the Interference, at least half of the people transported had their bodies altered to match different world they were sent to. Ranging from almost human-like to monstrous like slimes and giant spiders, the official term for this is the Interference Modification Body Syndrome or IMB-Syndrome for short.”

Finally, my speech was almost over.

“The first returned person was found a year ago, after he defeated the Demon Lord assigned to his world. From then, in less than ten months, all summoned humans came back, bringing exotic skills with them. As every world they lived in had different magic systems, so were the skills. Nowadays, magic is a common occurrence, while the “returned” people slowly reintegrate into society.”

That said, reintegrate was simply a polite way of saying “they screwed us all really good.” Because all countries suddenly found an army of superhuman demi-gods at their doorstep, some extreme measures were taken. Nominally, all returnees were still considered normal people, but speaking truthfully, we were treated more like walking and talking weapons of mass destruction.

In those worlds, the general rule was to kill or be killed, which is obviously considered unhealthy. Also, there was a huge bias against those possessing IMB-Syndrome due to their unique condition. Some even called them monsters, which (again obviously) they didn’t like that much.

The world was on the brink of war, when a decision was made. Now, all “returned humans” were under near-constant surveillance in the name of peace and all. And since we all are mostly teenagers, it was only logical to shove us all into special schools.

Therefore, in this entire school, there isn’t a single person who didn’t travel into a different world. Once we graduate, most of us will probably be forced to work for the government or such. The tension is obviously quite high around here.

“Good. You may be seated,” said the teacher. I sighed heavily and sat down. A bullet dodged. “Now, does anyone has something to add on this topic?” Or not.

As the entire classroom drowned in the noise of arguing students, I closed my eyes shut and let myself take a short nap.

At the very least, the weather remained pleasant for now.