Chapter 1: I’m gonna manipulate that beautiful girl from my class!!

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Translator: Soafp

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“Ah… I wanna spend a sweet-and-sour youth with a girl!”

That voice echoed through the park, where no one but me was around.

Of course, that voice belonged to me. What I'd just said out loud was my honest wish—my desire—about high school life.

“…Haa.”

Just saying things like this without ever actually doing anything is why I can't get a girlfriend, and why a rosy, perfect school life like all those “normies” have is nothing but a dream within a dream.

My name is Kai Masaki, and I'm just sitting here on a swing after school, lost in thought. I'm an utterly ordinary male high school student, and my age is exactly equal to the number of years I've gone without a girlfriend—a pretty lonely track record.

“Not having had a girlfriend even though I'm a third-year in high school… man, that's just sad.”

I do love anime and manga, so there was a time when I'd get attached to tons of characters and call them “my wife.”

Because of that, I used to think I wasn't lonely even without a real-life girlfriend, but after spending my entire school life alone like this, I've started to feel lonely after all.

I don't mean I have no one—I do have friends, and we hang out often—but still, there's no sparkle, no color!!

“…Guess I'll head home.”

Well, worrying about this only lasts a moment.

If I go home, turn on my PC, and watch some videos, I'll forget about it anyway. I pride myself on being able to bounce back quickly even after I've been bothered by something.

And that night, I ended up finding something that made me tilt my head in confusion.

“…What's this?”

It happened right after dinner, when I'd just gotten out of the bath and was idly scrolling on my phone.
Somehow, a strange app had been installed on my phone without me noticing.

“A hypnosis app?”

I opened the app called “Hypnosis App.”
The very first thing it showed was a text explanation of how to use it.

“Please activate this hypnosis app in front of the person you want to hypnotize.
The moment you do, that person will do exactly as you tell them. Their hypnotized state will not end until you release it, or until a certain amount of time has passed.”

“…Hmnn.”

My honest impression was: what kind of sketchy app is this, the kind you'd see in an ero-anime or ero-manga?

After staring at it for a while, I got fed up and tossed my phone onto my bed.

“What ‘hypnosis app'? Don't be stupid. Like something that could actually exist in reality.”

An app that lets you freely control other people—if something like that really existed in this world, it would already be a huge deal.

Sure, as a guy, I'd feel some guilt about it, but if I could do whatever I wanted, it'd be a dreamy, rosy paradise. …But that sort of thing only exists in fictional stories; there's no way it exists in this world.

“…Still.”

Even so, I couldn't stop being curious.

For one thing, I didn't remember installing an app like this on my phone. And even if this app had been sitting prominently in the store, I still wouldn't have thought, “Hmm, maybe I'll download this.”

“This app can only be used by you, and is visible only to you.
Therefore, there is no risk of anyone else finding out. This hypnosis app is yours alone to use.”

“…That's awfully convenient.”

I tried various things after that, but for some reason, I couldn't delete the app.

No matter what I did, nothing changed, and at this point I started feeling a bit scared of this app.

“Is it real? No way.”

I picked up my phone and headed to the next room.

“Onee-chan, can I come in?”
“Kai? Sure.”

I got a reply, so I opened the door and went inside.

Unlike my room, it was neatly tidied, and cute stuffed animals were lined up in large numbers on the bed.

Without even turning her gaze toward me as I entered, a woman sat in a chair, focused on her studies. She was my older sister, Miyako.

“What do you want? If it's nothing important, I'm busy right now.”

“Sorry about that.”

My big sister is small but feisty.

She's a second-year university student, two years older than me, with long black hair that reaches down to her waist as her trademark feature.

“…Phew, that's one thing done. So?”

My sister turned her body toward me.

As always, she's so petite she could easily be mistaken for a middle schooler, but she's actually quite kind-hearted, and as her little brother, I've been doted on by her since we were kids.

“There's just something I want to try.”

I took out my phone.

Honestly, I didn't believe in this at all… but still, I was a bit curious, and I felt like I wouldn't be able to sleep well unless I figured this out.

“??”

My sister tilted her head in confusion. In front of her, I activated the hypnosis app.

Then, my sister's behavior changed in a very obvious way.

“……………”

“Onee-chan?”

Suddenly, my sister stopped talking.

Worried, I looked at her face and let out a small sound.

“…Onee-chan?”

I asked again, but my sister didn't respond.

Well, “didn't respond” isn't quite right—her eyes were fixed only on me, and when I moved, they slowly followed.

“…Raise your right hand.”

“Yes.”

As soon as I said that, my sister raised her right hand.

After that, I tried telling her to do various things, and she acted exactly as I said. A feeling of “no way” began to grow inside me.

“No way… is this real?”

I couldn't believe it just like that… but even so, there's no way my sister would ever be this obedient or do exactly what I tell her.

The end of the hypnosis seemed to be triggered by pressing an “End” button displayed on the screen, so when I tapped that end button, my sister's behavior changed again.

“…Huh? Did I do something?”

“…Uh…”

Her eyes, which had been glazed and unfocused until a moment ago, now had their usual light in them, and my sister looked at me as normal.

I suddenly got scared, told her it was nothing after all, and immediately went back to my room.

“This… is this for real? Is this actually real!?”

I shouted that while lying on my bed.

I'm probably not the only one who'd react like this; anyone else who had the same experience would definitely show the same shock.

“Hypnosis app… oh man, oh man, oh man!”

While panicking, I also felt a strange excitement rising in me.

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And so, the next day, I spoke to one of the female students.

“Hah? Makai?”

The girl I called out to was Aisaka Matsuri.

She has bright brown hair, wears light but noticeable makeup, and has piercings in her ears… She's what you'd call a gyaru-style girl.

Not only is she cheerful, but her figure—especially her generously filled-out bust that guys all agree is “the best”—makes her extremely popular.

“Um… well…”

I locked onto a girl like that.

After school, when she left the classroom, I called out to her—and then activated the hypnosis app I'd used on my sister last night.

“Ah…”

Aisaka's demeanor changed in a very obvious way.

Honestly, I'd even started to wonder if what happened with my sister had just been a dream, but seeing my classmate Aisaka like this made it clear to me that this hypnosis app was real.

“H-hey, Aisaka… can I come to your place?”

“You can. Come on.”

My heart gave a hard thump.

Aisaka replied in a flat, expressionless voice and started walking ahead… I was so stunned that I just stood there for a moment, but then Aisaka turned around and stared at me.

“Ah, are you waiting?”

When I approached her, unmoving as she was, she started walking again once I was beside her.

“…This is real!!”

Sure enough, this app was the real deal.

After that, while flinching at the occasional glances from people around us, I followed Aisaka to her house.

“…Ohh, so this is it.”

Aisaka's house was an ordinary two-story home, nothing special.

Her parents apparently hadn't come home yet, and I was led straight to her room.

Entering a girl's room for the first time—someone else's family home, not my sister's—gave me a completely new sensation.

“It smells really nice… this is so fresh.”

Her room felt more feminine than my sister's, and one slightly unexpected thing was that there were posters of male anime characters on the wall.

She seemed like such a sunny, outgoing type that I'd assumed she'd have nothing to do with stuff like that, so I was surprised.

“…Alright.”

I threw my sense of guilt away!

With this app, there's no way I'll get caught, and there's even that saying: “If it's not found out, it's not a crime.”

Honestly, even though I'd decided to ignore my guilt, I still couldn't quite take that final step.

At times like this, how much easier would it be if I could just charge straight into my desires like the protagonists in those hypnosis-app ero-manga?

“…Eeeh! I'm doing this!”

“This is the worst,” I told myself, but I gave a tentative order anyway.

“Take off your clothes.”
“Okay.”

Aisaka obeyed my words.

As I swallowed hard, she took off her uniform right in front of me.

One piece, then another—the clothes that had been protecting her disappeared. And just then, I let out a small sound.

“…What's that?”

Her body, now in just her underwear, was so beautiful and captivating that I hadn't noticed at first, but my eyes ended up drawn to something there.

Her white skin—on her arms, there were several lines.

At first I thought it was a trick of the light, but it wasn't… Those were unmistakably—

“Scars from cutting?”

Marks of self-harm, of injuring her own body. I had seen them.

For a while, I forgot my original purpose and just stared at those scars.