Sudden Mission: Churup, Chubup, Chupup
The lewd sounds echoed inside the narrow makeshift shower stall. It was the unmistakable sound of a woman sucking a man's cock. If there was anything special about it, it was that the woman on her knees was my own mother.
Mom gradually increased her pace, sucking harder. My initial worry about smelling like sweat had vanished the moment it started. Once the act began, I couldn't think about anything at all. I was completely lost, drunk on the pleasure my mother was giving me.
“Ah…… Mom, that feels so good……”
Mom seemed to enjoy how much I was enjoying it. Her technique was inexperienced but careful and filled with affection. No matter what anyone said about how vulgar this was, I didn't sense any cheapness in her right now. It wasn't just my bias. It was because, more than lust, I could feel a pure, genuine love coming from her.
“Hahum, chup.”
At my praise, Mom's eyes crinkled in a small smile. That smile still carried an innocence and cuteness that didn't match her age. Looking down at her like this, her pose alone was unbearably erotic. Her hollowed cheeks, her plump lips stretched around my filthy cock, and those eyes gazing up at me. I could have jerked off to this single moment for the rest of my life.
“Chuuup— Pop. Haa.”
But Mom soon pulled my cock from her mouth. Her jaw must have grown tired from the unfamiliar act, because she started massaging her cheeks and chin with her fingers. We were so close. I couldn't bring myself to rush her. After all, this was purely one-sided service on her part.
“Changjae.”
“Yes, Mom.”
“If there's anything else you need or want to do, just tell me. I'll do anything I can.”
“Things I want to do……”
Countless scenes flashed through my head. But every single one was something I couldn't possibly say to my mother. No matter how desperate the situation, I couldn't bring myself to speak them out loud.
“It's okay. Just say it. We need to earn coins anyway, don't we?”
Coins. That's right. This was all to earn coins. I might get hurt again, or Seunghee might have another seizure. To prepare for those moments, I needed to stockpile as many coins as possible. This was, in a sense, an emergency measure. Just like how a person stranded on a deserted island eating human flesh to avoid starvation isn't considered a crime, this act with my mother was also a necessary step for survival.
There was no reason to feel ashamed. This was something we were doing to save our family. To save each other.
“…………Mom. Please… show me your breasts.”
“So my Changjae really is a man.”
“No──”
Mom's teasing words made every excuse flood my mind: that this was an emergency, that it was just for coins. But I swallowed every single one of them.
“──Yes. I want to see them.”
I really did want to see them. It wasn't purely for the coins. My desire was completely mixed in. The brief glimpse of her breasts when she changed into that bikini had been burned into my mind. While eating, while hunting, and even now, my head was filled with nothing but thoughts of her chest.
“You promise you won't laugh and call me weird? Mom's embarrassed too, you know.”
Mom deliberately kept her tone light. Getting too serious would only make things more awkward for both of us.
“I won't laugh.”
I answered in the same light tone. But my heart was hammering wildly in my chest.
“Then……”
Mom stood up and began untying the bikini string behind her neck. If another woman had done it, I might have thought she was being deliberately seductive. Raising both arms behind her head while wearing that revealing bikini naturally emphasized her armpits and the soft curves of her sideboob, creating an incredibly sensual line. I hadn't even seen the main event yet, but my cock was already twitching and throbbing in anticipation.
Gulp.
The sound of me swallowing was so loud I worried Mom might have heard it. Soon the string came undone, and the fabric covering her breasts slid down under its own weight. Her previously hidden breasts and nipples were now completely exposed.
“H-how do they look?”
Mom asked, fidgeting nervously. The moment my eyes landed on her bare breasts, my consciousness rocketed into outer space. It took me a long time to come back down to earth after hearing her voice. I tried to act casual, as if nothing unusual was happening.
“They're beautiful. Absolutely stunning, Mom.”
“You're just saying that.”
Even though she said it, Mom didn't look upset at all. Her skin was like flawless white porcelain that had never seen sunlight. Her perky nipples were a deep cherry-blossom pink. Despite their size, her breasts showed no sign of sagging, defying gravity as they thrust proudly forward. They were the legendary rocket tits. Mom's breasts were perfect in size, color, and proportion. Was this what people meant when they said breasts as beautiful as if crafted by the gods? The only proof they belonged to a human was the faint mole visible just below her left nipple.
“……I guess this doesn't come with coins.”
My brain was so fried from staring at her chest that it took me a second to process what she meant. Then I realized she was talking about the coins. In the past, the system would always send a message and reward me with coins at moments like this. Whether it was seeing her underwear or holding her hand.
“Ah. Right. This was already covered by a previous sudden mission, I think.”
“Sudden mission?”
“Your sandals, Mom.”
“Ah! The sandals!”
When Mom had changed into the bikini, a sudden mission had triggered about peeking at her breasts and pussy. Since I'd already received that reward, it seemed like I wouldn't get anything this time.
“W-well, I guess it can't be helped. Should I cover up again……”
Mom glanced at me awkwardly and started to readjust her bikini top. Aah. Her breasts were disappearing. My breasts… no, Mom's breasts……
As I stared at them, unable to let go of that lingering attachment—
Ding♪
Sudden Mission Issued!
Ejaculate using your partner's thighs. Self-stimulation is invalid.
“Ah!”
The familiar alarm rang out. What was it this time? What could it possibly be? I'd heard this alarm several times already, but this time, anticipation outweighed my surprise.
Use Your Partner's Thighs to Cum
⏰ Time Limit: 5 minutes
📍 Main Objective: Ejaculate using partner's thighs (Masturbation invalid)
🎁 Reward: 5 days of non-perishable emergency rations (unlimited shelf life)
📌 Sub-Mission: Grope her breasts
🎁 Sub-Reward: Up to 300 coins
“Thighs?”
Mom couldn't hide her shock at the ridiculous mission. How would that even work? Her eyes asked me exactly that.
The system continued, explaining that successful completion would grant five days' worth of emergency food that wouldn't expire, and that additional coins could be earned through the sub-mission.
“Changjae, hurry! Quick!”
“Uh…… okay.”
Mom pulled her bikini top back down and thrust her bare breasts toward me. The force of it made me instinctively step back. My head was spinning from the sudden development. Did that mean I was allowed to touch them?
“Aish, really.”
When I froze up, Mom grabbed both my hands with an impatient look and placed them directly on her breasts. No way. I was touching them. I was touching Mom's breasts. My hands sank into them. Were her tits made of magma? It felt like my hands were melting. I couldn't tell if my hands were here on earth or already in heaven.
“And the other thing… um, thighs? What does it mean to do it with my thighs?”
While I was lost in the sensation of her breasts, Mom took the lead on completing the mission.
“Like this?”
“Ugh……!”
Following the system's instructions, Mom grabbed my cock and slid it between her thighs. The shock helped me regain some of my senses. Right. I couldn't stay fixated only on her breasts. I had to complete the mission.
“H-how do I do it? Huh? Changjae?”
“Um, Mom, I think we need to apply some soap first.”
“Soap?”
“Just a second.”
Reluctantly, I pulled my hands from her breasts. I took the soap I'd bought earlier, wet it, and worked up a rich lather between my palms. I spread the foam over my cock, then moved to the inside of Mom's thighs—
“Ah……”
—applying it thoroughly. My hands touched some sensitive places, but Mom would understand. This was for the mission. This was an emergency situation.
“Then… I'll start, Mom.”
“O-okay……”
Facing her directly, I slid my cock between her thighs. The soap made her skin slick and slippery, and my dick pressed firmly against the soft flesh.
“Can you close your legs a little more?”
“L-like this?”
“……Yes. That's perfect.”
It felt incredible. In that position, I began slowly moving my hips back and forth.
“Ah……”
Because of our height difference, my cock was rubbing against a particularly sensitive spot. I could feel the smooth texture of her swimsuit panties and the soft, warm flesh hidden beneath them, separated by only a thin layer of fabric. Maybe because my cock curved upward. It definitely wasn't on purpose.
“Sorry, Mom.”
“I-it's fine, just hurry. We only have five minutes. And touch my breasts too.”
“Ah. Right.”
There was also the sub-mission to grope her breasts. Up to three hundred coins. I'd suffered so much hunting just to earn two hundred, but this single act could give me three hundred. There was no way I was letting this opportunity slip.
While continuing to thrust between her thighs, I used my soapy hands to start massaging Mom's breasts.
“Mmm……”
Mom turned her head away, cheeks flushed, as if she couldn't bear to look at my face. I felt exactly the same. I couldn't look at her either. The situation was far too embarrassing and abnormal. Rubbing my cock between my mother's thighs while fondling her breasts. Even just listing the facts in text made it sound ridiculous. And here I was, standing face-to-face with her, thrusting into empty air. An indescribable wave of shame washed over me.
“C-Changjae, do you think you'll be able to finish?”
“……Yeah. Earlier… um, since you already sucked me a bit, I think I can.”
Thanks to Mom sucking me earlier, I felt like I could cum soon. I couldn't say it that directly, so I mumbled my answer.
“That's a relief……”
Having offered both her breasts and thighs to me, Mom smiled with genuine relief.