The Neighborhood High School Girl, Miss Isezaki, Is the Great Saintess Returned from Another World~ And I, Suddenly Awakened as Her Exclusive Mana Supply Uncle, Travel Between Earth and Another World with Time-Space Magic~ - 30. Five-Minute Return Home

30. Five-Minute Return Home

――”Dimensional Transfer Teleportation”

After finishing tea time, I and Isezaki-san returned from “Emmy’s Inn” to “Isezaki Residence Apartment: Koutarou Matsunaga’s Residence.”

First, I checked the clock. It was 12:05――Huh, has only five minutes passed!?

“Sir, since we spent about five hours in the other world, one hour in the other world equals one minute on Earth.”

One hour in the other world equals one minute on Earth. But one hour on Earth equals ten hours in the other world. It seems that time flows according to different rules in each world.

Anyway, while on Earth, time passes ten times slower in the other world, but while in the other world, time hardly moves. Remembering this should be enough.

“Hmm, while it might be good that time doesn’t pass in the other world, it’s also troublesome that time doesn’t pass on Earth while living in the other world. We need to consider the balance…”

Here, there are plenty of entertaining contents like games, manga, TV, and the internet that are updated daily and not found in the other world. Of course, such entertainment is important to me.

“Sir, there’s one more thing that concerns me.”

“Huh? What is it?”

“With this flow of time, if you were to live in the other world for a long time, from the perspective of people living on Earth, you would appear to age rapidly in just a short time.”

“Oh, that’s right. Um…”

I took out my smartphone and opened the calculator app, but before I could do anything, Isezaki-san spoke up.

“It’s just a hypothesis with some margin of error, but even if you spent a year in the other world, it would only be about six days on Earth. Even ten years would be less than two months.”

“If I were to age ten years in the other world, it would only be two months when I return to Japan… That would be quite troublesome.”

“Is that so? I thought I might like to see a more mature version of you… How about trying a long stay?”

“Wha-?! I’d rather you spare me that…”

Just imagining being the only one who is aging at a class reunion, or standing out among classmates with receding hairlines, is painful enough.

But despite my protest, Isezaki-san chuckled.

“Hehe, I’m just kidding. I do have a good suggestion about that. I’ll tell you next time, so for now, I’ll take care of what I need to do first.”

“Ah… Yeah, I got it. Sorry, but I’ll leave it to you.”

“I understand. Then, if you’ll excuse me.”

With a graceful bow, Isezaki-san left the house. While the so-called “good suggestion” intrigued me, for now, what I needed to do was more important.

After all, the shampoo that Levia-sama requested, the same as Isezaki-san’s, seems to be sold only at the expensive hair salon I usually go to. I had assumed I could buy it at a drugstore…

As I watched Isezaki-san leave from the window and reflected on the difference in common sense between a commoner and a noblewoman, I realized once again.

—

**Departure**

After seeing off Isezaki-san, I changed into casual clothes and headed to the Isezaki residence. Since I’m accompanying a minor, I thought it would be best to keep in close contact with the guardian.

When I arrived at the Isezaki residence, the landlady greeted me in a flashy black printed T-shirt.

“Hey there, Matsunaga-kun. Did you go to the other world with Seina today? I thought she went, but she came back soon and grabbed a taxi to go somewhere. Is there some trouble?”

“Yes, I need to report to the guardian, including the explanation of what happened.”

Hearing my words, the landlord frowned with a somewhat annoyed expression.

“What? Seina’s a grown woman already. There’s no need to report to the guardian.”

“Well, Isezaki-san is still a minor…”

“Hmph, Seina must have a hard time too… Well, I’m curious about what happened too. Alright, come on in.”

With a flick of her finger, the landlord headed to the reception room.

—

**Reception**

Facing each other in the reception room, I explained today’s events to the landlord, including the matter of Levia-sama.

After taking a sip of tea with an elegant manner that didn’t match her rock-style outfit, the landlord slowly spoke up.

“Hmm. If Seina says there’s no problem with that princess, then we can leave her alone. So, Matsunaga-kun, is your business going well?”

“Yes, if things continue like this, I think I can manage somehow. So, as a token of gratitude and a souvenir for today…”

As I said that, I took out a package wrapped in oil paper from the storage.

“I don’t need gratitude, but if it’s a souvenir, I’ll gladly accept it. What’s inside?”

With great curiosity, the landlord peered into the package.

“This is monster meat I bought from the other world. It’s really delicious,” I said.

It was something I had asked for separately from my own purchases at the Reymar Company, specifically for the landlady. When she heard it was monster meat, her eyes widened.

“Oh, ho! Nice one, Matsunaga-kun! That sounds amazing! Let’s have it for dinner tonight when Seina comes. You should join us too!”

“If that’s the case, I won’t hold back,” I replied.

Since she dislikes it when people hold back, I’ll just graciously accept. I’m also looking forward to trying the monster meat dish.

“Now then, what kind of dish would be best to eat it with? What kind of dishes did you have it with over there?” the landlady pondered.

“I’ve only had it grilled on skewers,” I replied.

“I see. Grilled skewers are good, but since we have it, it’s a good opportunity to try other dishes too. By the way, what kind of monster meat is this?” she asked, staring intently at the meat. …Ugh, I really didn’t want to say it. Because the name doesn’t have a good image…

“What is it? Hurry up and tell me,” she urged.

“…It’s monster meat from a creature called Earth Rat.”

At my response, the landlady froze in place for a moment.

“Rat meat…? Rat meat!! Yeeessss!! Seriously, that’s so cool! Oh, I can’t wait for Seina to come back! Monster meat is the deaalll! Yeaah!” she exploded with emotion. Well, I guess the meat is already dead.

She seems to have a sensibility that is beyond ordinary, to say the least. Until Isezaki-san returned from her disappearance when she was a kid, she seemed like a fairly normal old woman.

While trying to calm down the landlady, who seemed about to dance with excitement and hurt her back, I ended up waiting eagerly for Isezaki-san to return.