episode_0028

The sex storm had passed, leaving the bed in tranquil silence.

My stepsister was half-passed out in sleep, and I, lying next to her, fired up the Sex Wiki, hoping for some fresh information.

*Vibration!*

[Notification: Kang Yiseo’s entry has been updated.]

The alert message greeted me with a vibration as soon as I opened the app.

I glanced over to make sure my stepsister was still asleep and then clicked into the entry.

—

[Kang Yiseo]

—Entry LV: 4

—Born: 2001 (Age 22 internationally, 24 in Korea)

—Nationality: South Korean

—Physical Stats: 168cm, Type B blood, 96-60-94cm, H-cup

—Sexual Activity Record

• Number of times masturbated today: 4

(Before going to Han Jihoon’s house)

• Number of times had penetrative sex today: 41

(At Han Jihoon’s house)

• Number of times reached orgasm today: 98

(4 from masturbation, 4 from clitoral pressing, 84 from clitoral stimulation sex, 6 miscellaneous)

—

These were incredible numbers, even surpassing the previous motel record.

So, it was actually possible for someone to cum nearly a hundred times in a single day.

The fact that the cause of orgasm was specified as “clitoral stimulation sex” rather than simply “sex” suggested that it was achievable because we focused on targeting a single spot.

Or perhaps it included the lighter sessions, like at the motel last time?

—

▽ 6. Dating & Sexual Experiences

• (Omitted)

▽ 7. Erogenous Zones

• (Omitted)

• Cervix and clitoris: Able to experience pleasure without separate development thanks to innate constitution.

Han Jihoon’s dick is thick, so just thrusting into the cervix stimulates the surrounding clitoris.

Thanks to this, clitoral orgasms are possible regardless of the position of penetration.

And while pleasure can be felt even without development, consistent stimulation will lead to even greater pleasure.

▽ 8. Kinks

• (Omitted)

▽ 9. Preferred Position

• Missionary: Likes being pinned down by Han Jihoon above her, hugging him, and breathing in his scent.

Also prefers to kiss and be pounded in missionary, as she can experience his scent more intensely.

▽ 10. Preferred Play

• (Omitted)

▽ 11. Relationship with Han Jihoon

• (Omitted)

• She is unknowingly feeling fluttery sensations when Han Jihoon, who has become more masculine compared to middle school, treats her like a woman.

(E.g., when he suddenly strokes her hair or looks at her with affectionate eyes.)

—

Looking at this, it belatedly dawned on me.

I had written that the more the clitoris is stimulated, the more sensitive it becomes.

That was why she couldn’t hold out at all from the moment I started doggy-style, even though she had managed to endure it at first when we made the bet.

Then there was the information that she had also started to like kissing in the missionary position….

‘Oh…?’

Looking at the “Relationship with Me” section, it said that she felt her heart flutter every time I treated her like a woman.

So, there was definitely potential?

As someone who had no intention of letting my relationship with my stepsister remain as just sex partners, this was very welcome information.

‘…She pretended to be unaffected on the outside, but she was thinking like that?’

Just then, my phone vibrated again.

[Notification: As a reward for automatically updating the entry, the ‘Unexpected Luck’ effect has been activated. Receive a special reward instead of Wiki Points.]

“Oho.”

I was curious what the newly acquired effect would be like, and it had been activated just in time.

[Notification: Due to the Unexpected Luck effect, you can choose one reward: the Cleaning Cam function or receiving a Random Package. You can choose both by using 1 Wiki Point.]

Cleaning Cam and Random Package… I had no idea what either of them were.

Since I had one point anyway, I decided to choose both.

[Notification: 1 Wiki Point has been used. Both special rewards have been given. (Points currently held: 0)]

A ‘Cleaning Cam’ entry had been added to the Sex Wiki menu.

[Cleaning Cam! The joy of sex should continue even after it’s over! After activating the function, shine the camera flash on the soiled areas to clean them! Now, don’t let bothersome cleanup interfere with the afterglow of sex!]

As soon as I activated the function, a pop-up appeared with what sounded like an advertisement.

Following the instructions, I activated the function and shined the flash on one corner of the bed.

“Wow. What is this?”

Light poured out from the blanket, which had been stained with sweat and semen, and it quickly became clean.

Not only did it become fluffy like it had just been washed, but it even smelled like the detergent I usually used.

Unable to hide my astonishment, I went to the wall where my stepsister had unloaded.

‘This is seriously insane.’

My stepsister’s fluids, which had been pooled on the wall and floor, as well as the sweat we had dripped on the floor as we moved around, had all disappeared cleanly.

‘Can I use it on people?’

I shined the flash on my body, but unlike before, there was no reaction.

I had wondered if my sweaty body would return to its pre-sex fluffiness, but it seemed I had to shower myself.

The fact that nothing happened even when I shined it on places we hadn’t been implied that it could only clean places that had traces of sexual activity.

‘Still, this is amazing!’

Now I wouldn’t have to go through the laborious task of washing and changing the blanket.

I wondered why an open-source dictionary app even had a cleaning function, but I decided to just accept it since it was an app that could even change a person’s constitution.

That being said, if the first reward was this good, how useful would the Random Package be?

As I was feeling excited with anticipation, the doorbell rang.

“Who is it?”

No answer came, no matter how long I waited.

Opening the front door slightly, I saw that there was no one around, just a box sitting there.

‘There’s no invoice or anything written on it.’

In terms of flow, the Random Package, which was a special reward, was probably this, but I was reluctant to open it in case I was wrong.

At that moment, an alert came from the Sex Wiki that the Random Package had arrived, and I opened the box in the living room, secretly, without Yiseo stepsister knowing, who was sleeping in my room.

‘What is this?’

There was another box inside the box.

A gift box, beautifully wrapped with a red ribbon.

It was the Sex Wiki that helped me, who was still unable to grasp the situation, this time as well.

[Notification: Random Package ‘Schrödinger’s Gift Box’ has been delivered.]

[Are you worried about what gift to give to your loved one? Does asking what they want seem beneath you? Don’t worry! Because there’s the Schrödinger’s Gift Box!]

[This box may contain nothing, or it may contain anything. When the box is opened, the item that the person who opened it most desires will appear! Now, don’t hesitate or ask; give her the gift she wants!]

[This box is disposable and cannot be used by Sex Wiki users, so be careful! Concede good things to your loved ones!]

When the box was opened, a watch would appear if she wanted a watch, and a wallet would appear if she wanted a wallet?

This was an even more ridiculous item than the Cleaning Cam.

An item that seemed very useful for gaining favor from Yiseo stepsister.

‘I should give it to her when the mood is right. Let’s hide it somewhere out of sight for now.’

I hid the box and returned to my room to rest when my stepsister’s body, which had been quiet, began to stir.

“Ugh.”

“Are you awake?”

“Uung….”

She rubbed her eyes and propped herself up, looking cute as if she had fallen into a deep sleep in a short period of time.

“…How long did I sleep?”

“Not long.”

“Huh? Was the bed always this clean? Didn’t we make it messy?”

“I cleaned everything up while you were sleeping.”

“You should have woken me up so I could help. …Anyway, thanks.”

“It’s nothing, what’s there to be thankful for about this.”

Unlike me, who answered without thinking, Yiseo stepsister said in a careful voice.

“…Are you still mad?”

“Huh? Are you still on about that? I’m really not mad, stepsister.”

“Really?”

I nodded enthusiastically to show that I wanted her to believe me now.

“…Really? I thought you were mad because you were suddenly acting like a crazy dog.”

“Crazy dog is a bit much.”

“But why can’t my body move? I couldn’t even wiggle my fingers because I was so tired when we were doing it earlier.”

It was probably thanks to the Healthy Sex effect, which was the reward for Yiseo stepsister reaching level 4 in the entry.

The fact that she had recovered so much in about thirty minutes while she was passed out was proof that the effect was certainly reliable.

“…Hey. Come over here.”

Stepsister tapped the spot next to her, so I went over.

“Why?”

“…Does it not get hard anymore?”

“It wouldn’t get hard after you pounded it that much. Even if it gets hard again, today is over.”

“Is that so? I wasn’t planning on doing it anyway, since I’m already satisfied.”

Even though she said she didn’t plan on doing it, she kneeled in front of my groin and pressed her nose against my dick.

Since when had my scent become a simple yet essential commodity for stepsister, regardless of her excitement?

“Sniff, haaa…♡ It smells so good.”

“Stepsister, you’re acting really perverted right now.”

“What are you talking about? You’re the more perverted one because you lost the bet. But it’s amazing that the dick is soft. It really looks like a sea worm.”

She lightly bit and released it with her lips, pressed it with her fingers, and now, not only was she smelling it, but she was playing with it like a toy.

After concentrating on exploring my flaccid dick for a while, she looked up at me after a long time and said.

“Hey. Next time, if you’re going to do it like you did today, tell me in advance. I seriously thought I was going to die because I came so much.”

“Don’t you secretly like being overpowered? You seemed to be feeling it more today than usual?”

“What woman likes being overpowered?”

After answering as if it was ridiculous, stepsister suddenly mumbled in a subdued voice.

“It’s just… In my head, you’ve always been a small younger brother, but now I feel like you’ve become more masculine, so….”

I didn’t think she would say something like that while blushing.

It seemed that seeing my changed appearance from middle school made her heart flutter, even in cases like this.

Even in the midst of all that, her nose, which was attached to my dick, was diligently sniffing and sucking in the scent.

I was confused as to whether I should find her, who was showing more and more diverse sides, cute, or whether I should be impressed by her unchanging dick love.

“Why do you keep stroking my hair….”

I couldn’t help but move my hand because it was cute how she was kneeling like a cat to smell me.

“Just because you’re cute.”

“…I’m a year older than you.”

“Can’t you be cute just because you’re an older stepsister?”

“Whatever, really.”

She was embarrassed this time as well and avoided my eyes.

I couldn’t tell if she was quietly letting me stroke her hair because she liked my touch or because she couldn’t detach herself from my dick.

“Oh, you remember, right? You lost the bet, so you have to grant me one wish.”

Although I was upset that I had been deceived by tearful acting, I nodded obediently because a contest was a contest.

“Then you know. What do I have to do?”

“I got a pension advertisement, so I have to go film the advertisement video for one night and two days. Come with me and help me out. You can rest after you finish filming everything.”

It was closer to a reward than a penalty for losing the bet.

“Pension? Just the two of us?”

“They said one person is allowed to accompany me, but Mom has work, and my friends said they can’t make it. I’ve never been to a place like that alone, so I was worried, but I think I can go with you.”

Since it was the vacation season anyway, there was no work, so I would have said I knew right away if she had just told me.

Anyway, it was welcome news to me in many ways.

“We’re going next Monday, so keep your schedule open. Okay?”

“Yeah. I’m completely free until I go back to school anyway.”

A one-night, two-day trip with just the two of us, I had to take this opportunity to appeal to my stepsister so that she could feel more like a man.

It would be perfect to give her the gift box I got earlier there.

If things go well, maybe she’ll be okay with vaginal ejaculation?

I never thought I would want to receive the penalty this much when I made the bet, but I wanted next Monday to come quickly.

===

A peaceful Thursday afternoon.

When I returned home after finishing my workout, a delivery box was placed next to the door of the house.

‘Oh. It’s here.’

I had ordered it because the phone charger kept failing, but it arrived earlier than expected.

I sent my thanks to the hard-working delivery man and opened the box as soon as I entered the house.

“Huh?”

Instead of the charger I was expecting, there was a hairbrush.

A sigh came out of my mouth as I checked the delivery invoice, wondering if they had sent the wrong item.

“Haa. It’s from the apartment downstairs.”

Delivery man, I know you’re working hard, but please pay a little more attention.

How could you deliver the package to the apartment downstairs instead of the next door? No, a person can make mistakes.

It was my fault that I didn’t check properly in the first place, so let’s think about how to deliver this to the apartment downstairs.

‘…I should just tell them honestly and apologize.’

I immediately headed to the apartment downstairs with the box.

I hoped someone would be home so I wouldn’t have to come back later.

*Ding-dong. Ding-dong.*

—Who is it?

Oh, they’re here.

“Hello, I’m the person who lives upstairs. I accidentally received the delivery here.”

—Delivery?

The front door opened slightly, and a person’s eyes scanned me through the gap.

I stood still as quietly as possible so as not to look suspicious, and the door slid open.

‘Wow….’

A blonde woman who was beautiful enough to make me admire her without realizing it appeared from inside.