After Crushing the Final Boss, I Got Infinite Mana and Returned to Earth ～With Cheat-Level Power, I’ll Rule Both the Game World and the Real World～ - Chapter 04: Even If You Take Away a Brother’s Bias, My Little Sister Is Still the Cutest in the World

Chapter 04: Even If You Take Away a Brother’s Bias, My Little Sister Is Still the Cutest in the World

“I have the memories of my past life.”

“…I suspected as much, but so your head really is—”

And what, exactly, is wrong with my head?

Clearly, Diabel didn’t believe a word about my past life.

Well, fair enough. If a friend suddenly told me, “Actually, I remember my previous life,” I’d probably think they’d joined some shady cult too.

But instead of dismissing me outright, Diabel at least tried to make sense of my claim.

“…Let’s say you really do have past-life memories. How exactly do you plan on traveling to that world?”

“Are you familiar with teleportation magic?”

“Hmm, the one that lets you instantly cross long distances, right? With how well you mesh with my magic, you could probably manage extreme long-range travel… but teleportation fizzles out if you can’t picture the destination clearly.”

“No problem at all. I was a shut-in in my past life—so imagining my home is as easy as breathing.”

And so, I decided to try it right away.

I began chanting the teleportation spell, vividly picturing the house where I’d lived before.

A slightly large, two-story home in a quiet residential neighborhood.

“—Gate.”

A massive magic circle spread out beneath my feet.

I poured in as much mana as I could, activating the teleportation spell.

Blinding light burst forth, swallowing both me and Diabel whole.

It lasted only an instant—I shielded my eyes, and the next moment, Diabel and I were standing in front of a large house.

Diabel stood frozen, mouth hanging open. His dumbfounded look was… honestly pretty cute.

“W-W-Where… where is this!?”

“This is my world from my previous life. Looks like the teleportation worked.”

“You actually crossed worlds!? Even I couldn’t do something like that!?”

He looked utterly shaken by the fact we had pulled off inter-world travel.

To be fair, even I hadn’t expected it to succeed on the first try. I was just as surprised.

Then Diabel tilted his head, staring at something.

“Hm? What’s this? Some kind of writing…?”

“Oh, that’s a nameplate. It says ‘Suzuki.’”

“Suzuki? Is that your name?”

“Ah, I never told you, did I? My name in my previous life was Minato Suzuki. I actually like that name quite a bit—so make sure you remember it.”

Anyway, standing around in front of the house forever would just make the neighbors think we were suspicious strangers.

So I put Diabel up on my shoulder, stepped into the yard, and rang the doorbell.

But no matter how many times I pressed it, nobody came out.

The door was locked too—so my mom and little sister must’ve been out.

Well, nothing to be done then.

I walked around to the backyard and stopped in front of the doghouse.

After a short wait, a familiar figure emerged.

Out came a Shiba Inu—our family dog, Shiva.

Not “Shiba” from Shiba Inu, but Shiva from Hindu mythology.

Yes, I named him back during my full-blown chuunibyou phase. Please don’t question it too much, for my sanity’s sake.

“Grrrrr…”

“What is this mutt!? How dare it growl at me! Such insolence!!”

With that, Diabel hopped off my shoulder and tried to intimidate Shiva.

And thus, the battle began.

To skip straight to the conclusion—Diabel was utterly defeated.

Naturally.

At his current level, Diabel was weaker than a slime. There was no way he could beat the guardian deity of the Suzuki household.

“Guh… V-Very well, I’ll let you off this time!!”

“Woof!!”

“Hahaha, Shiva, you’re as lively as ever.”

I sat down in front of Shiva and held out my right hand.

This was the same greeting my past-life self had always used with him.

Shiva blinked in surprise and crept forward cautiously. He sniffed my hand, then tilted his head with a soft little thunk.

Because I smelled different from before, he was probably confused—this greeting only the old me used.

I quickly scratched under his chin, and his wariness vanished like it had never existed.

“What are you doing?”

“Oh, sorry. I got a bit nostalgic. Actually, the house key is inside the doghouse.”

I stuck my head into the doghouse and found a small locked box.

My dad had built it as a DIY project—it only opened if you followed a certain sequence of moves. No one outside the family could ever unlock it.

“All right, let’s use the key we found and go inside.”

“…Is it okay to just walk in? It’s your house in your past life, sure, but still—”

“If I explain things, my mom and sister will understand. I just hope they don’t call the guards first.”

With that, I unlocked the front door and stepped inside.

And—bam—I nearly walked straight into a teenage girl.

She had sleek black hair cut to her shoulders, large black eyes, and features so refined she could have passed for a porcelain doll.

Fresh out of the bath, she wore only a towel, hair still damp.

So that was why no one answered the doorbell earlier—she hadn’t heard it while bathing.

The moment our eyes met, she shouted:

“Eh—w-who are you!? A burglar!? But the door was locked!! …Wait, you’re ridiculously handsome!? What!? What’s the right move in a situation like this!?”

“…Still blurting out every thought without a filter, huh? Aoi.”

“Eh? Huh? What?”

This beauty was none other than my little sister from my previous life—Aoi Suzuki.

Even without big-brother bias, she was the cutest little sister in the world.

“Uh, excuse me… but who exactly are you?”

“You won’t believe me, but I’m Minato Suzuki. Your brother. To be exact, I’m someone whose past life was Suzuki Minato.”

“…My brother died just last month. If you’re going to lie, at least come up with something more believable.”

“No, really—it’s the truth.”

Aoi frowned, clearly displeased by my words.

Well, of course. To her, I was nothing more than a suspicious intruder claiming to be her dead brother.

And since Minato and Aoi had been really close in my past life, this situation couldn’t feel good for her at all.

Now then… how should I convince her?

“If you don’t leave, I’m calling the police.”

“Fair enough. But if I tell you something only Minato Suzuki could possibly know, will you believe me?”

“…Spare me. I’m serious, I’ll really call the po—”

“When you were in kindergarten, you accidentally saw Mom and Dad being way too affectionate, and you were terrified of them for a while. And when they tried to figure out why you were crying and got closer, you just screamed harder.”

“…No way. No freaking way. You’re actually my brother!?”

Looks like that did it—Aoi was convinced I was her brother.

Still, she didn’t fully drop her guard.

She studied my face carefully, then asked in a cautious voice—

“I-I’m not done yet! One more question!! Who was my first crush!?”

“The older guy from the neighborhood who got arrested for owning child po*n.”

“Why did I dump my very first boyfriend!?”

“You had a boyfriend?”

“I didn’t!! That was a trick question!! Last one—despite my face and figure being top-tier, why don’t I get any dates!?”

“Because you blurt out every single thought the moment it pops into your head and then post it on Twitter.”

“The way you mercilessly drop truths Mom and my friends tiptoe around… no doubt about it!! You’re really my brother!!”

Finally convinced, Aoi launched herself at me and hugged me tight.

So tight it was almost hard to breathe, but then I heard her small, tear-choked voice.

“Sniff… hhic… welcome home, Onii-chan.”

“…Yeah. I’m home, Aoi.”

“Don’t ever leave again, okay? You scared me so much. When I came back from shopping and saw you dead in front of your PC… Mom and I were so sad…”

“Yeah. I’ll be more careful next time.”

She’d been grieving me far more deeply than I realized.

Honestly, it made me value her even more than all the nobles who’d looked down on me just for not having magic.

I’d have to make sure my family never had to go through something like that again.

“Ah, I know! I’ll post on Twitter that my dead brother reincarnated and came back home as a total hottie!”

“Don’t you dare.”

…And that right there, Aoi, is exactly why you’re not popular.

―――――――――――――――――――――

[Afterword]

One-Point Aoi 

Age: 15. 

Sharp-minded, great at sports, and gorgeous on top of it all. Even if you factor in her habit of blurting out whatever’s on her mind and trying to post literally everything on Twitter, she’s actually super popular. The reason she seems unpopular is because all her admirers keep each other in check.

Hobbies: Bingeing light novels and anime, collecting merch.

Gaming: Plays mobage casually.

A bit of a brocon—if anyone insults her brother, she’ll crush them in their own area of expertise.

Physique: modest but well-shaped.

Looks: more mature than her age, often mistaken for a high schooler.

Secret: She and Minato aren’t actually related by blood. Neither of them knows this.

If you thought “Aoi’s first crush is way too tragic,” please drop those ★s.

And if you find yourself thinking, “Naming him Shiva? LOL,” “LMAO, the evil dragon lost to a Shiba,” or “Wait, so she’s into mobage…?” —then don’t forget to leave a comment, bookmark, ★rating, or review!