The Bet's Penalty Turned Out to Be a Reward

The bed had fallen silent after the storm of sex finally passed. Noona lay beside me, half-conscious and fast asleep. I lay next to her, wondering if any new information had appeared, and turned on Sexmuwiki.

I glanced over to make sure Noona was still sleeping, then opened her file. The page loaded instantly.

Following the insane numbers from the motel last time, these figures were ridiculous. I never knew a person could climax nearly a hundred times in a single day. The fact that the cause of her orgasms specifically listed Porchio stimulation sex instead of just regular sex suggested that focusing on that one spot was what made it possible. It also seemed to include the lighter orgasms from last time at the motel.

Seeing this reminded me of something I'd written earlier. The more her Porchio was stimulated, the more sensitive it became. That was why, even though she'd managed to hold out at the start of the bet, the moment I started fucking her like a wild dog she couldn't move an inch. The new information that she now liked being kissed in the male superior position… and then there was the relationship section.

'Oh…?'

It said that every time I treated her like a woman, her heart fluttered. That meant there was definitely a chance. For someone like me who had no intention of keeping our relationship as mere sex partners, this was incredibly welcome news.

'…So on the outside you acted like nothing was wrong, but that's what you were really thinking?'

Right then, my phone vibrated again.

"Whoa."

I'd been curious what the new effect would be, and it had activated at the perfect time.

Cleaning Cam and Random Delivery—I had no idea what either of them did. Since I had one point anyway, I decided to take both.

A new menu item called Cleaning Cam had been added to Sexmuwiki.

The moment I activated the function, a pop-up that looked like an advertisement appeared. I followed the instructions and shone the flash on a corner of the bed.

"Whoa. What the hell?"

Light burst from the sheets that had been stained with sweat and semen, and they instantly became spotless. Not only were they as fluffy as if freshly washed, but I could even smell the familiar scent of my usual detergent.

Unable to hide my amazement, I moved over to the wall where Noona had squirted earlier.

'This is actually insane.'

The love juices that had soaked the wall and floor, along with the sweat we'd dripped while moving around, all vanished without a trace.

'Can it work on people too?'

I shone the flash on my own body, but unlike before, there was no reaction. I'd hoped my sweat-drenched body would return to its pre-sex fluffy state, but it looked like I'd still have to shower myself. Shining it on areas where we hadn't been also did nothing, which suggested it only cleaned traces of sexual activity.

'Still, this is amazing.'

I no longer had to go through the hassle of washing and changing the sheets. It was weird that an app like an open-sex dictionary even had a cleaning feature, but since it was an app that could change people's constitutions, I decided to just roll with it.

That was the first reward. I wondered how useful this Random Delivery thing would be. My heart was still racing with anticipation when the doorbell rang while I was wondering where the reward would appear.

"Who is it?"

No answer came no matter how long I waited. I cautiously opened the front door and found no one around—just a single box sitting there.

'No shipping label or anything written on it.'

Given the context, this had to be the special reward, the Random Delivery. Still, I hesitated to open it right away just in case. At that moment, an alarm sounded from Sexmuwiki saying the Random Delivery had arrived. I opened the box in the living room, careful not to wake Iseor Noona who was sleeping in my room.

'What is this?'

Inside the outer box was another box. It was a gift box neatly wrapped with a red ribbon. Once again, Sexmuwiki helped me understand the situation before I could fully process it.

So if the person wanted a watch, a watch would appear, and if they wanted a wallet, a wallet would appear? This was even more absurd than the Cleaning Cam. It looked like an incredibly useful item for raising Iseor's affection toward me.

'I'll give it to her when the mood is right. For now, I'll hide it somewhere she won't see it.'

I hid the box and returned to the room to rest. That's when Noona, who had been quiet, began to stir.

"Mmm..."

"You awake?"

"Uung..."

She must have fallen into a deep sleep in that short time. The way she rubbed her eyes and sat up was adorable.

"...How long was I out?"

"Not that long."

"Huh? Was the bed always this clean? Didn't we make a mess?"

"I cleaned everything while you were sleeping."

"You should've woken me up so we could clean together... Anyway, thanks."

"It's fine. It's no big deal."

While I answered casually, Iseor Noona spoke in a careful voice.

"...Are you still mad?"

"What? You're still on about that? I'm really not mad, Noona."

"Really?"

I nodded vigorously to show she could trust me.

"...Really? I thought you were angry because I suddenly went at you like a crazy dog."

"Crazy dog is a bit much."

"But why can I move my body? Earlier I was so exhausted I couldn't even lift a finger."

There was no need to think about it. It had to be thanks to the Health Sex Effect that came with reaching Document Level 4. She'd been unconscious for about thirty minutes, yet she'd already recovered this much. The effect was definitely real.

"...Hey. Come here."

Noona patted the spot next to her, so I moved over.

"What?"

"...Is it not getting hard anymore?"

"After I pounded you that hard? Of course it's not. Even if it did get hard again, we're done for today."

"Really? Good, because I was satisfied and wasn't planning on doing it again anyway."

Even though she said she wasn't planning on it, she crawled in front of my crotch and pressed her nose against my cock. At some point, my scent had become like an essential comfort food for her, regardless of whether she was horny or not.

"Sluuurp... Haaa...♡ It smells so good."

"Noona, you look like a total pervert right now."

"What are you talking about? You lost the bet, so you're the bigger pervert. But it's interesting how soft it is. It really does look like a dog's."

She gently bit it with her lips, pressed it with her fingers, and now she was playing with it like a toy, beyond just smelling it. After focusing on exploring my soft cock for a while, she looked up at me for the first time in a while and spoke.

"Hey. Next time you're going to do it like today, tell me in advance. I seriously thought I was going to die from cumming too much."

"Don't you secretly like being taken forcefully? You were feeling it more than usual today."

"What woman likes being forced?"

She answered as if it was ridiculous, then suddenly mumbled in a tiny voice.

"It's just... In my head, you were always my little brother... but now I can feel that you've become a man, so..."

I never expected her to say something like that while blushing. So seeing how I'd changed since middle school really did make her heart flutter. Even now, her nose stayed glued to my cock, diligently sniffing away. I couldn't decide whether to find her increasingly diverse sides cute or to be impressed by her consistent love for my dick.

"Why do you keep stroking my hair..."

I'd done it instinctively because she looked adorable lying there like a cat sniffing my scent.

"Just because you're cute."

"...I'm a year older than you."

"Does being older mean I can't call you cute?"

"What are you even saying?"

Once again, she avoided my eyes out of embarrassment. I couldn't tell if she was quietly letting me stroke her head because she liked my touch or because she couldn't bear to pull away from my cock.

"Oh, right. You remember, don't you? Since you lost the bet, you have to grant me one wish."

I was annoyed that I'd fallen for her fake tears, but a bet was a bet, so I nodded obediently.

"Yeah, I know. What do I have to do?"

"I got a pension ad request. I need to go film a promotional video for one night and two days. Come with me and help out. Once we're done filming, you can rest."

"A pension? Just the two of us?"

"They said I could bring one companion, but Mom has work and my friends aren't available. I've never gone to a place like that alone, so it was awkward, but if I go with you it should be fine."

This was closer to a reward than a penalty for losing a bet.

"I'm down. But was this the favor you were going to ask me about at the department store?"

She shook her head.

"The ad request hadn't come in yet back then. I was originally planning to milk your cum until my stomach was full for an entire day. I really wanted to try drinking it until I got sick of it."

"...What?"

A chill ran down my spine. If I'd granted her request back then, I might have ended up dried out like a mummy and not even be here right now. I silently thanked my lucky stars and asked another question that came to mind.

"But is it okay to use your wish like that?"

"What do you mean? It's one night and two days. It felt too awkward to just ask you to come with me. But going alone felt weird too..."

Since it was vacation season and I had no plans, I would've said yes immediately if she'd just asked. Still, this was welcome news for ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠me in many ways.

"We're going next Monday, so keep your schedule open. Is that 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. This was the perfect chance to make Noona see me more as a man. Giving her the gift box I just obtained there would be perfect too. If things went well, maybe she'd even let me creampie her? I never thought I'd actually look forward to receiving the penalty from our bet, but I couldn't wait for next Monday to come.

===

It was a peaceful Thursday afternoon. After finishing my workout at the gym and returning home, I found a delivery box sitting next to the front door.

'Oh. It's here.'

My phone charger had been acting up, so I'd ordered a new one. It arrived faster than expected. I mentally thanked the hardworking delivery man and opened the box as soon as I stepped inside.

"Huh?"

Instead of the charger I'd expected, there was a hairbrush inside. Thinking they'd sent the wrong item, I checked the shipping label and let out a sigh.

"Haah. It's for the downstairs neighbor."

The delivery guy was working hard, but I wished he'd pay a little more attention. How did he mix up the floor below with mine? No, people make mistakes. It was also my fault for not checking properly. I should figure out how to get this to the downstairs neighbor.

'…I'll just be honest, apologize, and hand it over.'

I immediately picked up the box and headed downstairs. I hoped someone would be home so I wouldn't have to come back later.

Ding-dong. Ding-dong.

—Who is it?

Oh, someone's there.

"Hello, I'm the person who lives upstairs. I accidentally received your delivery."

—A delivery?

The front door opened slightly, and a pair of eyes scanned me through the gap. I stood still, trying to look as non-threatening as possible. The door then slid open fully.

'Wow…'

A blonde beauty so stunning I couldn't help but gasp appeared from inside.