Sudden Mission ++ (1)
I panted heavily, my breath ragged. “Haa… haa…”
My cock was wedged between my mother’s thighs as I thrust my hips with frantic urgency. It felt like I’d turned into some kind of horny male dog in heat, mindlessly humping anything I could reach. If someone saw me from outside right now, I’d look utterly ridiculous. I was literally fucking the air. My mother was probably completely fed up with me by now.
I knew how pathetic this was. But I couldn’t stop. It wasn’t just because of the mission. This simple act of rubbing my dick between her thighs—this pathetic “air-fucking”—felt better than any sex I’d ever had before.
“Haa… haa…!”
It wasn’t my first time doing thigh-fucking. But I’d never gotten this worked up with anyone else. It had to be because it was my mother. The smooth, soft texture of her thighs sliding against my cock. The plush give of her breasts as I kneaded them in my hands. The springy bounce of her skin against my thighs and lower belly. And then—
“Ugh… C-Changjae, not there…”
Every so often my cock would brush against her pussy through her panties, and her body would jolt in surprise each time. It was different from any other woman. Everything about my mother turned me on.
“Haa… Mom… Mom…!”
This was nothing more than pseudo-sex—sliding my cock between her thighs while our genitals barely grazed each other through bikini bottoms. Yet here I was, losing my mind with arousal. I was probably far from normal.
My mother looked up at me, her cheeks flushed bright red, her expression lost and helpless. We had already crossed so many lines, but it seemed she still couldn’t easily accept the way my cock kept rubbing against her pussy through her panties.
Despite how troubled she looked, the sight of her plump lips sent another wave of filthy lust crashing through me. I wanted to kiss her. I wanted to suck on those lips, shove my tongue inside, and ravage her mouth. I wanted to share a deep, tongue-twisting kiss with my mother. I wanted to become one with her.
Gulp.
Saliva slid down my throat. This couldn’t continue.
“—Mom, let’s change positions.”
“Ah.”
The only reason I could do these perverted things with my mother was because I had the excuse of a Sudden Mission. But kissing wasn’t part of it. This mission didn’t include kissing. The moment I kissed her, the justification of the “Sudden Mission” would shatter. It would be purely for my own desire.
If I couldn’t control this urge, I had a feeling these acts—which had continued thanks to my mother’s consideration—would come to an end right here. So I changed our position. One where I couldn’t see her lips anymore.
This was what you’d call the rear-entry position—the man taking the woman from behind. Even if I was only pretending to fuck her.
Slap, slap, slap, slap, slap!
Once I switched positions, her lips were out of sight. But there was a bigger problem. Every time I rocked my hips and rubbed my cock against her, my lower belly kept smacking into her ass.
“C-Changjae? This position is…”
My mother’s voice trailed off, sounding troubled. Still, she simply kept her ass and thighs pushed back toward me. She didn’t actively resist.
“Mom, if we do it like this, I think I’ll finish really fast!”
I used the fact that she wasn’t actively refusing as an excuse to maintain the position. Because it felt incredible. Even better than facing each other. The way her plump ass bounced against my lower belly and thighs, the way my glans pressed even tighter against her most sensitive spots, and above all, this position created the perfect illusion that I was actually having sex with her.
If someone saw our silhouettes from outside, they’d definitely think it was a straight-up “backshot.”
“Mmm… yeah…”
My mother nodded reluctantly. Because it was ‘for the mission.’ That noble justification made even these boundary-crossing acts forgivable.
“Haa… haa… haa…!”
I buried the guilt of deceiving my pure-hearted mother deep in my chest and sped up my hips even more. It couldn’t be helped for the sake of the mission. If I moved faster, it couldn’t be helped if my cock rubbed against her panties. It couldn’t be helped if I groped her breasts roughly to earn more coins. That’s right. All of this was unavoidable.
“Ugh… mm… ha, ah… ahh!”
As I panted and thrust my hips, a strange sensuality began to creep into my mother’s voice. I instinctively knew it. She was getting aroused too. She was a woman, after all. There was no way she could stay indifferent when a man’s cock was this close to her most intimate place. No woman could feel nothing while a strong man groped her breasts from behind and breathed heavily against her.
“Mom! Mom!”
“Ah, C-Changjae, no…!”
Now I was deliberately grinding my cock against her panties with relentless focus. My mother tried to escape by wiggling her ass, but with both her upper and lower body pressed tightly against mine, there was nowhere to run.
“Hah… ah…!”
Since I was holding her breasts from behind, every change in her reaction transmitted directly to me. The ass that had been trying to flee from my cock was now moving as if guiding me toward even better spots. The person experiencing it—my mother—seemed completely unaware of her own changes.
“Ah—!”
My mother was lusting after me too. The moment I realized that, an unbelievable wave of pleasure shot up my spine.
Spurt! Spluuuurt!
My vision went white. In the burning ecstasy that felt like my brain circuits were melting, I came. Thick white fluid shot out from my cock like a water gun, splattering between my mother’s thighs. The semen flew with surprising force and stuck stickily to the makeshift shower tent.
“Khh… haa…”
Dribble… spluuuur…
I let out a pathetic groan as I milked out the rest of my load, still gripping my mother’s breasts tightly from behind. The ejaculation seemed to go on forever. And then it was over.
It was no exaggeration to say this was the most pleasurable orgasm I’d ever experienced. The intensity of the pleasure left my body drained, replaced by a heavy, languid exhaustion.
“…Changjae. Are you finished…?”
“—Ah.”
I had been lost in the afterglow for a while, staring blankly, when my mother’s voice finally snapped me back to reality. Only then did I realize I was still squeezing her breasts with all my strength. I quickly let go and pulled away from her.
“M-Mom, I’m sorry. Did that hurt?”
Her cheeks were flushed. Red handprints were clearly visible on her breasts. Her skin was so pale that the marks stood out even more vividly.
“No, it’s okay. So… does this mean the mission was a success?”
“…Yes. I think so.”
My mother smiled as if this was no big deal. The marks really shouldn’t be there. I was worried they might even bruise. And right on cue, the alarm signaling mission completion rang out.
Sudden Mission Cleared! Rewards will now be distributed!
Sub-Mission Cleared! You have earned 244 coins!
“Two hundred and forty-four coins! That’s enough to buy a toilet!”
“Ah… I guess so.”
…Was this a lot? Staring at the red handprints on my mother’s breasts, I fell into a strange, conflicted mood. It felt like the price was too high just to buy one toilet. My mother’s breasts weren’t some cheap commodity.
“Oh, right! Changjae, wait a second.”
My mother turned on the makeshift shower and aimed the water at my cock.
“M-Mom, I can do that myself.”
“No, that’s not what I’m doing. Just hold still.”
I thought she was trying to wash off the semen after my climax, but she only rinsed away the soap bubbles clinging to the outside of my shaft. Then she squatted down in front of me and—
Chu.
“Ugh—?!”
She pressed her lips to my glans and sucked on it like a straw, drawing out what was left inside.
“Mmm… gulp.”
She had neatly sucked out and swallowed the remaining semen from my urethra.
Semen Swallowing Successful! You have been awarded 12 coins.
“Ugh. Only twelve coins?”
Was it because the amount was so small? My mother muttered with clear dissatisfaction, then turned her gaze to the semen I’d sprayed onto the tent.
“M-Mom? Let’s wash that off quickly.”
“Ah.”
Before she could think of anything else, I hurriedly rinsed the semen away with the shower water.
“Mm… Good work, Changjae.”
“You did all the hard work, Mom. I just… did what I did.”
“Hehe. Then let’s say we both worked hard.”
She held out her palm for a high-five, her face carrying a hint of lingering tension and awkwardness. This was probably her way of clearing the subtle discomfort between us and returning to our usual mother-son dynamic.
If I slapped her hand, everything would go back to normal. That’s how it should be. That’s what had to happen. It couldn’t be helped. We were mother and son, after all.
I organized my thoughts and reached out to meet her hand—
Ding♪
“Huh?”
Another ominous alarm rang out.
“Ugh? What is it this time?”
My mother frowned slightly, looking annoyed. Honestly, I wanted to rest too. After pushing my body to its limits hunting and then experiencing such an intense orgasm, I had zero strength left. I really wished the system would give us a break for today.
But this time, the mission content was completely different.
Sudden Mission Issued!
What goes around comes around. Bring your female partner to orgasm. Self-pleasure is not allowed!
“Huh?”
“What?!”
It wasn’t my mother pleasuring me this time. Now it was my turn to pleasure her.
Sudden Mission: Bring Your Female Partner to Orgasm
⏳ Time Limit: 5 minutes
🎁 Reward: 200 coins
Bonus: For every orgasm beyond the first achieved within the time limit, the reward doubles.
(Ex: 1 orgasm = 200 coins, 2 orgasms = 400 coins, 3 orgasms = 800 coins, 4 orgasms = 1600 coins…)