The Untouchable of Magic High School – A New God Enters the Game

August 2092

I remembered something important. It's 2092—the Reminiscence Arc.

Sticking to canon might seem smart, but with how much the Mitsuya Clan has already diverged from the main story, following the original timeline feels... pointless. Besides, I'm a Mitsuya, not a Yotsuba. Our paths only overlap in title—we're both Ten Master Clans, sure—but our involvement has to stay distinct.

Still, this world's "corrective force" might not like how far I've strayed.

My only real edge? The National Defense Forces. I've got ties to them, if I ever need to explain myself. As for Dad? He hates the Toyama Clan for business reasons. I've met them too. Knowing the original plot, I just hope they don't pull anything reckless like abducting me for "tests" or "reeducation." That would only fuel anti-mage tensions. But expecting reason from everyone? Yeah, right.

"Lieutenant Sanada wants you to come," Motoharu said. "You might be able to help them finalize a specialized CAD. That's half the reason."

"And the other half?" I asked.

"An invite to a private party from Mitsugu Kuroba. Old acquaintance of Gramps. Dad couldn't say no."

Of course. Kuroba Mitsugu head of a Yotsuba branch family. I didn't think the Yotsuba would show up this early, but here we are.

"You'll go as Nagano Yuto. I'll be Nagano Motoharu."

"But everyone knows you're a Mitsuya. Wouldn't we get found out boarding together?"

"Gramps is handling the cover. Even got us party suits."

"Shizuru, Kana, and Mika are gonna flip."

"Dad's bracing for that."

I was supposed to cheer my sisters on at the Nine Schools Competition. Now I'd be crashing the Reminiscence Arc in person. Five years of prep better pay off.

"This is Dad and Gramps' doing. Let them handle the fallout. If things go south, Gramps' back is on the line."

"You're ruthless."

We shared a laugh, unaware that Gozo's back would, in fact, suffer consequences.

Since I started training at the Kamiizumi dojo, it's basically been home. Gramps' training? Less like lessons and more like death trials. But I welcomed them. Anything to ditch the old-life complacency. Even my brother, Onii-sama, went through intense training.

"Impressive," Gozo said the first time we met, tossing me a wooden sword. "Catching it midair? I like you."

(Thanks... That nearly killed me.)

I don't fondly remember that toss. But thanks to that experience, I earned my Shinei-ryu certification. Senior disciples looked at me like I'd survived divine punishment. I don't get it.

The day before Okinawa, I was meditating alone in the main dojo hall, training my [Eye]—an ability that lets me perceive Idea, the information realm where Eidos exist. Greek philosophy meets magic science. Most modern mages manipulate Eidos without realizing it. I do.

Gramps forbade [Eye] use indoors. Kana did too. Apparently, there's a spiritual side to this house. Once I unlocked the library, I got access to spirit magic texts, but nothing screamed "active spirits." Just basic wards.

…Except something was off.

A picture frame was tilted. It showed a young Gozo, his daughter, and three others. I'd seen it before, but it looked recently moved. Only Gramps, his family, Mototsugu, Shizuru, and I could access this hall. None of us would touch it casually.

Curiosity—or instinct—got the better of me.

I used air magic to lift the frame, popped the backing, and found two faded letters.

The senders? Maya and Miya.

From Genzo Yotsuba.

"Gramps…"

So that's it. Genzo entrusted these to Gozo before he died. Probably letters meant for his daughters. The people in the photo were likely Gozo, Retsu Kudo, Genzo, and the girls.

For someone so decisive in battle, Gramps had hesitated for decades.

He always preaches duty and loyalty. Yet here he was, avoiding his own promise.

Maybe guilt paralyzed him. Genzo wanted Gozo to watch over the twins—not seek revenge. So he left him these letters as a reminder.

I stood up and stormed into the main dojo.

Gozo was alone.

"Yugen, you broke the rule!" he bellowed, grabbing a bokken and swinging.

Sloppy. Furious. But slow.

I caught it between two fingers, kicked it down, grabbed his hem, and flipped him.

Thud.

He stared, stunned.

"Gramps, you preach keeping promises but dodge your own? These letters—from Genzo to his daughters. Still unopened."

"...That's—"

"Give them while they're still alive. That's all I'll say. If you don't, I'll despise you forever."

I activated [Reinforce], healing his old wounds as light shimmered around us.

"That spell… repairs the Magic Calculation Area?"

"Kind of. It's organic interference, so I rarely use it. You get the point?"

"Who do you think I am? I feel like I could fight Mototsugu all day now… oh, right."

Gozo ruffled my hair.

"Thanks, Yuto. That was a needed wake-up call. Thirty years is too long."

"But you're still in trouble."

"Eh—what?"

CRACK!

"CHESTO!"

Shizuru's wooden sword struck his side.

"Swinging a sword at family outside training? Madness. Reflect on it."

I backed off quickly. Shizuru gave me a death glare for even thinking about interfering.

"Your strikes… have improved…" Gozo wheezed.

He later promised to deliver the letters. One—Miya's—he gave to me.

Unexpected clan entanglements? Yeah. Ready or not, I was involved.

Motoharu and I flew to Okinawa as "Nagano Motoharu" and "Nagano Yuto." Gramps insisted on executive class. Honestly, I didn't need the luxury. I could handle travel without magic.

But then...

At the airport lounge, a woman approached.

"Are you two Gozo's boys? I'm Miya Shiba."

I nearly cursed aloud.

Miya Shiba. Formerly Yotsuba. Twin sister of Maya. And one of the most intimidating presences in the entire franchise.

Motoharu went stiff.

"I'm Nagano Yugen. This is my brother, Motoharu. Nice to meet you, Miya-san."

"N-Nice to meet you," he stammered.

A twelve-year-old calming a twenty-two-year-old. Yep. Totally normal.

Miya smiled.

"No companions?" I asked.

"My children are with their brother. You'll meet them later."

Oh no.

And there it was.

"I'm Miyuki Shiba. Pleased to meet you."

"...Tatsuya Shiba."

The protagonists. Already. My reincarnation danger sensors went wild. Miya must've sensed it—she smiled knowingly.

"You're like Gozo. Friendly unless provoked."

Gee, thanks.

The real kicker? On the plane, my seat got swapped. I ended up next to Miyuki. Motoharu sat beside Miya, stiff as a board.

I pulled out my foldable terminal and began typing, trying to act casual.

This Reminiscence Arc was officially off-script.