1 Prologue

(Author's Note: Just trying random ideas and concepts and stitching them to this story.)

~ Prologue - START ~

....

In a room, a man had just woken up from his short, routine-like slumber of sleeping at 11 PM to 4:30 AM. He had brown eyes and a short brown hair, a good build, and shark-like teeth?

He does his daily routine when he wakes up, such was stretching for 20 minutes, take a cold shower, then drink milk. In fact, he was inspired by "a certain stand user" do proceed to do this routine every single day.

His full name was Mikami Satoru, who had a cliche-like Isekai genre protagonist name. And actually was an Isekai Protagonist since he was 14.

Originally, he was a very timid, shy person who worked hard to become a teacher, but now he was somebody who had grown up due to a certain event that happened once a day each year since he was 14.

And for some reason, his abilities were kept, and his equipment were put into his [Inven-Dimension](*¹) and replaced with what he wore before he was summoned. Apparently, he had either become too strong, or it was just that the world he was summoned to had a weaker density of mana.

At least in his 13th to 15th summon, he just started having fun, by becoming a Demon King, a Self-Proclaimed God, and a guy who casually took over an entire continent just for fun.

And by sheer coincidence, it just works.

In the present, he was a carefree person, minding his own business as much as he wanted to, but first....

"Good morning, mom." Greeting his mother, Mikami Usami, she had been a widow for the past 5 years due to her husband, Satoru's father, had died from overworking in a recently bankrupt black company.

Before he died, Satoru had already become a full-fledged teacher in a certain school and promised to marry a good housewife (in this world, because he already had different wives from his early otherworldly summons*²).

"Ah, Satoru-chan~! You're early, as expected~!" Seeing that his mother had already prepared breakfast consisting of a miso soup, grilled fish ,and steamed rice.

They had a small talk while they ate their breakfast, and after that....

"Satoru-chan, why aren't you married yet? You know, if you continue this act of yours, I'll be forced to find a girl to date you!" Satoru's mother said in a very playful manner, making him sigh and rub his nape.

'You and Dad already have grandkids, just not on this world....' Of course, he did want to tell her that, but he would be seen as being a little insane. No one would believe him, anyways.

"Mom, I'll eventually find someone good enough to marry...."

"You promised us that you would give us grandkids sooner or later, you know!"

After apologizing, he proceeded to walk out of the home that he had bought several years ago, it was 7:15 AM, and the school is just around 15 minutes of walking, he can even see it in this distance. He should also prepare for the lessons he'd give different classes with again.

Satoru already wore his working clothes, so he had not needed to think that he forgot something again.

Those were old times, he thought.

Later, inside the class he was assigned to....

'Nagumo is nearly as late as ever, those four bullies are in their own atmosphere which I dislike from them, plus, three of them are more stubborn, and then there's no one absent in this class, once again for the 30th time in this semester.' Satoru had observed the classroom, and it was a little more lively than usual.

Classes had gone as usual.

And he noticed that Hajime was a little more determined, of course I knew he was lazy, but that was due to the fact that he believed that his future was already set, but I motivated him by saying that if he keeps having average scores, then his parents will not become dissatisfied by his grades and that when he is starting to work in the future, he'd become a more acceptable person.

Well... Except he sleeps when Satoru is not teaching.

Not that he cared, anyways. As long as he had average grades, this is fine.

There were also some troublesome students in this school, amounting to around 60 - 70 of them, most of which are boys - specifically delinquents and bullies, among those were Hajime's 4 bullies. No need to introduce them more other than they are very stubborn.

And there is Amanogawa Kouki, a very self-righteous kid who wanted to become an officer, if not, he'd become an investigator. The problem with him is that, his ideals were quite naïve, and other things. It's actually pretty hard to convince him out because of a dead old friend of mine.

Satoru internally sighed while focusing on their current lesson: History.

~ Later.... ~

~ Satoru's PoV ~

As I was discussing something to one of the teachers, I felt something familiar inside the classroom, which is just nearby.

It was mana.

How? It was a surprise, but I also knew what it was due to being familiar with that type of magic being used for summoning.

"Huh? What is it, Mikami-san? Something wrong?"

"E-eh... I forgot something in my classroom!"

So I started running towards that general direction, leaving the teacher behind me confused and almost started dashing towards me.

"Wait a moment...!"

"Sorry, we'll talk later!"

Taking a sliding stop, I had arrived in front of my classroom, and I current actions may have been rude, but sorry about that, { }-senpai!(*³)

I just wanted to take a break, for now!

So, I opened the door slowly, and as I did, a bright light had consumed me - nah, no way, the entire classroom had been consumed by the light.

It was an entire class, hm? This one's weird. But at least I have another adventure that awaited me.

~ Prologue - END 💠 ~

(𝐀/𝐍: Hello there!)

Notes:

*𝟏: A very massive dimension that stores the immense amount of equipment, materials, and et cetera that Satoru had while he had his adventures after currently fifteen worlds

*𝟐: He has around 45 total wives (25 Deceased) in the other worlds he had been previously summoned to

*𝟑: ..... This character shall have a name and slight relevance after a certain amount of time