Tutorial Mission with Seohyeon
Mission Participants: Lee Yumin, Ahn Seohyeon.
Please enter the Mission Room.
Yumin was more flustered by the fact that his partner was Seohyeon than by being called for another mission. Seohyeon was their neighbor next door, who had always treated Yumin and Gayeong like her own little siblings, doting on them just as much as her husband Kim Jeongho did.
Like Yumin, Gayeong, Suji, Minseo, and Jiwon all wore troubled expressions. Including Seohyeon and Jeongho, the whole group had grown close through their daily evening gatherings in the central square. Naturally, they all knew Jeongho and Seohyeon were newlyweds.
Yumin's gaze instinctively turned to Seohyeon and the man standing beside her, Jeongho. He, too, had a bitter look on his face.
"Seohyeon noona, Jeongho hyung... what do we do...?"
"What do you mean, what do we do? We have no choice but to go through with it, right?"
Jeongho responded with surprising composure. Seohyeon, meanwhile, just kept her head bowed in silence.
"Take good care of Seohyeon. She's only ever known me as a man until now. Yours looks pretty big from what I can tell, so she might feel overwhelmed. Go easy on her."
"Got it. I will."
"And... her breasts are her erogenous zone. Keep that in mind."
Jeongho leaned in close for that last bit, whispering it low before stepping back.
Yumin and Seohyeon entered the Mission Room. As the door sealed shut, a bed rose up from the center of the floor. The timer on the wall began ticking down the mission time.
Yumin felt utterly awkward. At the same time, he couldn't help thinking that the moment he'd half-dreaded had finally arrived. It was better than watching his female acquaintances paired with other men, but this was painful enough in its own way.
"Seohyeon noona. We have to do this, right?"
"Yeah..."
"Then... I'll get started."
"Yeah..."
Yumin had no way to check the calendar, so he didn't know the exact date, but he knew at least that the new year had dawned. This was the eighth mission, and with one failure under their belt, at least twenty-seven days must have passed. Kidnapped in mid-December, it was probably mid-January now. That would make him twenty-four, Gayeong twenty and a full adult, and Seohyeon twenty-nine, wrapping up her twenties.
To Yumin, Seohyeon sometimes felt like a warm, nurturing big sister who enveloped and cared for everyone around her. Other times, she came across as a cute, innocent little sister. That youthful vibe came from her baby face and girlish personality and tastes. Yet when she comforted others, she exuded maturity—especially with those voluptuous E-cup breasts accentuating her womanly side.
"I'll start by taking off your clothes."
"Yeah..."
The way she stood before him now, head shyly bowed, murmuring soft responses—it was pure little-sister energy.
Yumin slipped off Seohyeon's pants and gently laid her on the bed. He stripped off his own clothes and climbed on after her. Hiking up her top to expose her breasts, he decided to focus there first, as Jeongho had tipped him off about her erogenous zone. To keep things minimal, he didn't remove the top entirely, just pushed it up.
Seohyeon's breasts were undeniably large and full. They looked big even clothed, but bare, they were even more impressive. She must have been one of those types who looked smaller dressed.
Yumin cupped both breasts with his hands, kneading them softly. Their fullness meant one hand couldn't contain them; he had to shift his grip repeatedly. He switched to squeezing one with both hands while sucking on the nipple at its center. Compared to the generous breasts, her nipples and areolas were modestly sized, which only made them cuter.
He alternated between kneading with his hands and sucking the nipples. As he repeated the process, Seohyeon, tense at first, began letting out soft moans.
"Ah... ah... aha..."
Her breasts were so soft and yielding, fingers sinking right in—he could've kneaded them all day without tiring. But time was limited.
Yumin pulled away from her chest and positioned himself between her legs. If her breasts screamed maturity, her pussy was pure girl-next-door innocence. Unlike Mun Seon-kyeong's decadent folds from before—someone around Seohyeon's age—Seohyeon's was pristine and petite, like a virgin untouched by men.
He parted her folds slightly. True to Jeongho's word, her insides were already nicely wet. Yumin extended his tongue, lapping gently at the soft flesh within. Once her pussy was slick enough, he moved to her clit.
As he licked it, even more love juices flowed from her depths. She seemed ready for insertion now.
"Seohyeon noona. I'm putting it in now."
"Yeah..."
Yumin pressed his cock against her entrance and eased in slowly. It wasn't just for show—her tightness gripped him like a girl's. Seohyeon had lived a sheltered life: school and home during her student days, work and home after. No overnight trips with friends, barely any late-night drinking. She'd met Jeongho, dated a year, married, and lost her virginity on their wedding night. As he'd said, she knew no other man. Yumin was only her second.
Jeongho was average-sized for a Korean man, so Yumin's top-1% monster was a real burden for her. He felt that intense squeeze firsthand.
"Ahh... out... ahnng..."
Each thrust drew pained moans from her lips—not pleasure, but discomfort mingled with it.
"Seohyeon noona, does it hurt?"
"Hng... a little... it's bearable..."
He was already thrusting as gently as possible, but it was still too much for her. Yumin slowed his tempo even further.
"Ah... aha... aha..."
Her voice softened a touch. Fresh juices coated his shaft steadily. Her pussy was adapting to his size.
"Seohyeon noona, better now?"
"Hng... it's... fine... ahng... now... ahnng..."
Her reactions, that narrow, vise-like grip—it drove Yumin wild. He couldn't hold back anymore. Thrusting deep, he came, his semen battering her womb walls hard. Even as he unloaded, soft moans escaped her.
Spent, Yumin pulled out. Seohyeon lay there panting on the bed.
Congratulations! Did you enjoy your time?
Participants, please return to your private rooms.
Yumin dressed himself, then helped her back into her clothes, straightening her top last and helping her up.
"Seohyeon noona, you okay?"
"Yeah..."
Her cheeks flushed faintly as she bowed her head. Unlike usual, she couldn't meet his eyes.
Yumin led the way out; Seohyeon followed slowly behind. As the Mission Room door opened, Jeongho and the rest of Yumin's acquaintances waited outside.
"Jeongho hyung, I'm sorry."
"Nah, it's not your fault. If anything, thanks for being gentle with her."
"No, I think she was in pain partway through..."
"Nah, she seemed to enjoy it. Right, Seohyeon?"
"Honey..."
Seohyeon shot Jeongho a cute glare. Could a twenty-nine-year-old really be this adorable?
Neither Jeongho nor Seohyeon seemed hurt or upset. Yumin breathed a silent sigh of relief that their relationship hadn't soured. The group, who'd been watching tensely, relaxed too.
They dispersed to their private rooms. Yumin returned to his.
Lying on his bed, he replayed the sex with Seohyeon. It had been incredible. Her innocence, mismatched with her age, gave it a fresh thrill. Those full breasts, that cute little pussy—the sex itself was phenomenal. But the best part? Despite it all, Seohyeon and Jeongho hadn't rejected him. If that had twisted things between them, making it awkward to even see each other, it would've crushed him.
Really... what a relief.
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As evening fell and the central square opened, Yumin hurried over. No need to claim a spot anymore—the group naturally gathered at the eight-person table. Jeongho was already there today.
"Jeongho hyung, you're early."
"Yeah. Unlike some people, I didn't expend any energy, so I'm full of vigor."
Jeongho teased lightly, poking fun at Yumin's afternoon romp with his wife. But there was no real bitterness or blame beneath it. Jeongho wasn't after an apology. He just wanted to brush it off casually, keep the mood light. Yumin got the hint and could only laugh awkwardly.
"Haha..."
Jeongho had arrived early to clear any awkwardness between them before the others showed.
As Yumin and Jeongho chatted, the rest trickled in. The table had three chairs along the long sides and one each at the ends. Clockwise from twelve o'clock: Jiwon took twelve, then one-to-five: Suji, Seohyeon, Jeongho; seven-to-eleven: originally Gayeong, Yumin, Minseo. Mi-kyung took six, so Gayeong swapped with Minseo to avoid her. Final lineup: twelve Jiwon; one-to-five Suji, Seohyeon, Jeongho; six Mi-kyung; seven-to-eleven Minseo, Yumin, Gayeong. Yumin at nine faced Seohyeon at three.
A layout that never fazed him before now felt excruciatingly awkward after today. Jeongho held Seohyeon's hand under the table, chatting warmly. She responded in her usual soft tones, a bit quieter than normal. They looked affectionate. But whenever her eyes met Yumin's, her cheeks pinked. To him, she seemed like a schoolgirl stealing glances at her first crush's senior—heart-meltingly cute.
With Jeongho and Seohyeon leading the charge to keep things upbeat, the group quickly slipped back into their usual vibe, chatting amiably.
"But man, doesn't Yumin seem like a total pro these days?"
"Huh?"
"You know... with sex. He seemed clueless at first, but now he's got that seasoned vibe."
No, hyung... not this topic right now...
Yumin groaned inwardly, but Jeongho kept going, even polling for agreement.
"Am I the only one? Isn't that right, Suji?"
"Totally. Fact is, he was a virgin until me."
"Really? For real, Yumin?"
"Uh... yeah..."
"How many times does it take to get that good? Guess practice makes perfect in bed too."
Yumin couldn't fathom why Jeongho was like this today. He was usually so mild-mannered, not one for crude banter. Sure, maybe to shake off the earlier events and brighten the mood—but this felt overkill. And Jeongho genuinely seemed cheerful. What Yumin couldn't stand most was every woman at the table eyeing him with keen interest.