Ero Academy

[Kim Sang-hyuk]

I sent the twin sisters back home.

I'll report to Isabella.

[Isabella]

Didn't I tell you not to contact me first?

Quick response!

I wouldn't have felt wronged if she had said something about contacting me over the weekend.

[Isabella]

Anyway, you did a great job.

No matter what, the president is full of affection. The type who takes care of their own people.

Maybe that's why I like her.

Rather than making her into an onahole, I want to properly date her.

Dating properly…

What does it mean to date properly? I can already feel the sensation fading away.

[Evelyn Sheriden]

Did you get home safely?

One of the messages that got delayed yesterday.

[Kim Sang-hyuk]

The professor's pace is too fast.

After a while, the message returns with a buzz.

[Evelyn Sheriden]

You were doing well, weren't you? Did the professor say he was impressed?

[Kim Sang-hyuk]

If we keep the same pace next week, everyone will die.

Did I go too far?

[Evelyn Sheriden]

(laughing emoticon) Alright. The exchange matches only take place on the second Wednesday, so don't be nervous.

What a relief!

If it had been a schedule of running around snowy mountains like this every week, even active-duty soldiers would have cried.

It would have been really tough without breaks in between.

[Onahole Squad Group Chat]

Henna: Photo

Henna is in full naughty factory manager mode.

She was sharing provocative photos meant for her boyfriend, flaunting her ample breasts, in our group chat.

[Henna]

Just for Sang-hyuk

[Henna]

(A photo where 80% of her breasts are visible because the V-neck is cut so low.)

[Yuuna]

I get startled every time I come in here.

…Saved.

[Kim Sang-hyuk]

Let's meet at lunch. Yuuna

[Yuuna]

Where? What time?

True. Where should we hang out?

Since we agreed to watch a movie together, it feels like we should watch it somewhere nearby.

○ While turning on the map, I realized a strange fact.

'Isn't the geography slightly different?'

It doesn't match 100% with the Seoul I knew.

The reason is because of the black-painted areas that run through the city.

I didn't know what they were at first.

[Chapter 2: Forbidden Zone, Danger]

A forbidden zone?

A restricted area—is that what it means?

Up until now, I hadn't known that there was a "slum" in OnaAka's Seoul where access had been prohibited.

I was slightly shocked after looking it up on the wiki.

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'So that's how it is.'

With villains running amok, Seoul's security just can't be the same.

[Yuuna]

Shall we meet in front of XX station?

[Kim Sang-hyuk]

Sure.

I lack information about the area. Let's think about it while walking around with Yuuna.

Right now, I want to go back home for a while and take off my school uniform.

I had bought clothes at a workshop before, but since it's a date, I'm considering buying another piece of outerwear. and so on.

As I was browsing a clothing store while I was out,

I unexpectedly encountered someone on the street.

"Serena?"

"Oppa?"

Did you come out to shop?

Serena, appearing slightly embarrassed, hides her bags.

There were many people on the street, but Serena was so conspicuous that it would have been strange not to recognize her immediately.

"What are you doing here?"

"As for you, Oppa..."

"I'm going to work for a bit."

Serena lowered her head in embarrassment.

Upon closer inspection, the contents of her bag revealed a set of underwear.

"You bought this?"

"…Ah. Ugh! You shouldn't look!"

I took the bag from Serena, and our bodies pressed close together.

"Let me take a look."

I was being a wickedly mischievous brother.

"Ah… Yes…"

Upon hearing that I would examine it, Serena obediently handed it over.

"…Quite risqué."

I was taken aback by the unexpectedly daring choice of underwear. The pants featured a striking pattern and were designed to barely hang onto the hips with a thin strap. Serena had always owned a fair share of provocative lingerie, but this seemed to surpass anything I'd seen before.

"Is it okay for a student to wear something like this?"

Jokingly, I posed the question, and Serena hesitated, her cheeks flushed red and her hands clasped tightly together.

"Well… I wanted to show my brother some sexy underwear. I'm sorry for using the coin on something like this."

"Don't worry about it. It's fine to use it for your sister's underwear. But isn't it a bit too flashy?"

To be honest, I didn't mind it at all.

If you were to ask if it's a suitable match, perhaps it might be a bit of a mismatch?

"Actually, I already... look like an academy student, so what's the reason for buying something like this? The male clerk even said it's more risqué than it appears."

"Where is that guy now?"

Serena took the lead and grabbed me.

"Oh, big brother! Isolde took care of him for me! It's fine!"

"Phew…"

In any case,

It's not the kind of underwear a model academy student would typically purchase. She wouldn't have normally owned something like this.

It's solely for the purpose of showing it off to her brother, one hundred percent—something she wouldn't have done otherwise.

"Doesn't it suit me? Should I... get a refund?"

"No. I want to see Serena's lewd, mischievous side."

"…"

"Show me."

In broad daylight, with her brother inspecting the underwear she bought,

and even insisting that she should wear it and show him; she's the perfect erotica game protagonist.

She's living and breathing right here, right now.

"Can I wear pantyhose?"

"No. Bare skin. White high knee socks."

"…"

She even customizes on the spot!

Though slightly embarrassed, Serena twisted her waist and agreed to her brother's request.

"Yes, I'll dress as you desire."

Such is the authority of my older brother.

"Shall we go home together? Have you finished shopping with Isolde?"

"Ah, I briefly went to the restroom. I'll be out shortly."

"Oh, senior."

Isolde, who certainly isn't a gentleman, walks out.

My attention is drawn to the abundant bosom of my younger sister's friend, which rivals Serena's intensely curvaceous chest in her casual attire.

"Hello, Sol."

"Do you know what just happened?"

"What happened?"

"Serena was approached by five suitors while walking around. All within a mere hour."

Those damned rascals...

They must have been targeting our Serena's firm derrière.

Quivering…

"I had quite a difficult time fending them all off."

"I'll reward you with some coins."

I instantly donated 10 coins.

"Thank you~."

"Weren't you approached as well? One would think you'd both be targeted."

"I was, but I refused their advances. Just because a man's talent is crude doesn't mean I'll stoop to their level of vulgarity."

"I hadn't considered that."

You, on the other hand, are steeped in victim mentality. That's the issue.

"Oh, I'm sorry... I was up editing all night. Ugh… I'm a bit sensitive now."

"You worked hard."

With a swoosh, I naturally reached out to touch her. Sol placed her cheek in my hand and rubbed against it.

"Did you also stay up all night?"

"Just a bit. Why did Sol stay up so late and go shopping early in the morning?"

"Well, Serena said she needed sexy lingerie to break your resolve, so she called me out."

"Sol, you!"

Serena's secret was inadvertently exposed.

Lingerie meant to shatter my resolve...

"You shouldn't try to break my resolve like that. I don't even have any coins."

"You don't have any coins? You seemed happy when you received a lot of them."

"Not those coins."

As Serena locked eyes with me, her cheeks flushed red.

What was she planning to accomplish by breaking my resolve? This strange younger sister of mine?

And even after I told her there were no more defense coins,.

"So, Isolde picked the sexy lingerie?"

"Yes. It's really sexy and pretty, isn't it?"

"…"

I'm not very familiar with the world of women's lingerie.

"I mentioned that it might be a bit too flashy, my dear brother."

"Really? You're so oblivious."

"…No… It's just that it's true."

"Or do you get more excited when your sister's underwear looks more infantile?"

"Excited? Not at all!"

Just try wearing something like teddy bear underwear. It'll be ripped right away.

"I don't have that kind of criminal inclination. If anything, I'd prefer more striking underwear."

"That's right, Serena. You confirmed it with your own mouth, so it must be true, right?"

"Yep."

He seems to be embarrassed because the conversation keeps revolving around his underwear.

When he's genuinely focused on his sexual desires,

Serena becomes an erotic heroine who doesn't even need sexy underwear. In this world, only Enn and I know that.

It's called the "Hexagonal Onahole."

"I decided to wear... vulgar underwear... with white knee-high socks, on bare skin."

"What on earth are you making Serena do?"

"In our family, there's a tradition of gaining energy by looking at a sister's underwear."

"Pervert…"

[Enn's agreement +1]

… …

How did I end up stuck in a world like this?

The perverse recognition stack, oblivious to human emotions, is infuriating.

"I wonder if it's my girlfriend's underwear."

"What are you wearing now?"

"You have keen eyes, senior."

Tsk.

"Anyway, enjoy your shopping. I'm going home."

"What were you doing hanging around here, anyway?"

"I've been working since yesterday. Now it's time to go home and rest."

Isolde seemed slightly taken aback.

"No way, you tried so hard in the competition; did you really stay up all night? I'm worried…"

"Why didn't you get some sleep instead of talking to others?"

"…"

She closes her mouth tightly, looking adorable as if she's at a loss for words.

"See you at home, Serena."

"Yes, oppa!"

"Sol, too."

I hugged Sol lightly and kissed her on the forehead.

Chu.

"Ah…"

"Oppa, I want that too!"

My younger sister clings to me as if she's made a fantastic discovery.

Hug.

I also plant a kiss on Serena's forehead.

"Hehe…"

Serena smiles happily, as if the kiss she received from her brother was delectable.

Is she buying underwear with the coin her brother gave her?

Quite desirable, indeed.

On the way home.

[Serena]

(revealing photos of Serena and Isolde's underwear.)

… A photo arrived that satisfied my curiosity about the fitting room.

Serena lifted her skirt to reveal her white cotton pants.

Isolde removed her jeans, leaving her bare legs clad only in pink underwear.

…

[Serena]

Did it make you feel naughty? Big brother

[Kim Sang-hyuk]

I got turned on.

I know I shouldn't react like this to my sister's underwear reveal.

But what can I do about it?

[Serena]

(Emoji of a white rabbit character looking shy and hiding in a hole on the floor.)

"Big brother, have you arrived?"

Before I could open the door and enter, I found Stella waiting to greet me.

"What color are Stella's pants today?"

"Is that what you ask as soon as you see your sister's face? Pervert."

Tightly.

Stella hugged me while saying that.

Having heard from Serena that her brother was coming, she must have come out to meet me personally.

Our dear little sister.

"Yellow, like a baby chick."

"Show me inside."

As soon as we stepped into the entrance hall,

Stella slightly lowered her dolphin-patterned pants before me.

"Hey, quit obsessing over your sister's pants, you pervert."

"I've seen enough."

Now, even being called a pervert doesn't faze me anymore.

*

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