Tutorial
Yumin was in a bind. The administrator had said the first mission would be simple and easy, but Yumin was still a virgin with no experience with women. On top of that, the room was surrounded by fully transparent glass walls, allowing everyone outside to peer right in. The penalty for failure was three days of fasting—no food for three days, when meals had been coming three times a day. Of course, a person could survive three days without eating no problem. But if the next mission had the same penalty, it would get harder to endure. Moreover, according to Angel, this mission was supposed to be extremely easy. That meant future missions would ramp up in difficulty, with harsher penalties.
Yumin had no precedents to reference for the first mission, and the content itself was daunting. As he hesitated, unsure what to do, Suji spoke up first.
"Yumin."
"Suji sunbae. What should we do?"
"Yumin. Do you like me?"
Now 26 years old—27 by Korean age—Suji had dated a few boyfriends over the years. When she was younger, she'd been drawn to fun-loving guys who knew how to dress sharp and play around. But as she matured, her heart leaned toward kind, hardworking men. To Suji, Yumin fit that perfectly. Despite his tough family situation, he'd studied diligently to keep his scholarships, tutored and worked part-time jobs to make ends meet, and even taken care of his non-blood-related little stepsister. Yumin was kind—too kind. He was so pure and easily swayed that he often got taken advantage of and ended up on the losing end.
Every time Suji saw him like that, she wanted to wrap him up and protect him. The three-year age gap wasn't much, but it stirred a maternal instinct in her. She wanted to look after him. It might not be the fiery, passionate love between lovers, but at some point, affection for Yumin had quietly taken root in her heart.
"Of course I do."
Yumin answered quickly. How could he not like Suji, who always looked out for him in small ways?
Suji knew his response didn't mean romantic love, but she wasn't disappointed. If anything, it felt like the subtle wall between TA and student had crumbled, which was a relief. She had no idea exactly what this place was, or if escape was even possible—or how long they'd be stuck here. Amid that uncertainty, just having Yumin with her was a comfort.
"Yumin. Have you been with a woman before?"
"No... I haven't."
"I see... Would it be okay if I were your first?"
"Suji sunbae. Are you really going to do this?"
"Yeah. We don't seem to have much choice. And with you, I'm okay with it. The audience bothers me a bit... You don't like it?"
How could a guy say no when a woman offered herself like this? Truth be told, Yumin wasn't uninterested in a woman's body. He was healthy, had desires, just no opportunities. His foolishly kind nature—always avoiding hurting others—had led him to put it off until he could properly commit to one woman, leaving him a virgin to this day.
"No, I like it too."
"Then let's do it. Time's ticking away."
"Okay..."
"Kiss me first?"
"Sure."
Yumin pressed his lips to Suji's. The first woman's lips he'd ever touched were incredibly soft. Soon, Suji's tongue slipped into his mouth. Yumin followed her lead, gently pushing his tongue into hers. Their tongues met in the middle and intertwined. When their lips parted, a thin silver thread stretched between them. Suji gazed at him with a soft smile. Yumin's face was already flushed from just the kiss.
"How was it?"
"It was... good."
"Now for the real thing."
"Okay..."
Suji pulled down Yumin's pants and freed his cock. Already half-erect from the kiss alone, it was far more impressive than she'd expected. She gripped it with one hand, extended her tongue, and lightly licked the glans. Then she began swallowing it from the tip. The moment it entered her mouth, Yumin's cock fully hardened.
"Glurk... Yumin, you're huge. First time seeing one this big. Your face looks so innocent, but down here it's a whole different story. Unexpected."
Yumin had never obsessed over his size, but he knew it was a bit bigger than average. That perception was actually way off. At 16.3 cm long and 13.5 cm in girth, it was top 1% in Korea—nothing to scoff at compared to Western standards either.
Suji struggled to take Yumin's massive cock into her mouth and sucked hard. Even her brief fellatio had Yumin on the verge.
"Suji sunbae. I'm gonna cum."
Suji glanced at the remaining time. Only five minutes had passed—plenty of leeway. She bobbed her head faster. Yumin couldn't hold back and started ejaculating into her mouth. A pleasure incomparable to masturbation washed over him. Suji kept his cock in her mouth, gulping down the semen as her throat worked. She sucked out every last drop before pulling away, playfully pouting at him.
"Thought I was gonna suffocate. Why so much? Makes sense, though—pent up since arriving here. Haven't jerked off at all?"
"No, it's just... I barely masturbate even normally..."
"Got it. Now you do me."
Suji slipped off her baggy pants—similar to Yumin's. No panties underneath, revealing her dark pubic hair immediately. She sat on the edge of the bed and spread her legs slightly.
"Normally I'd strip fully, but with all these eyes... Will you lick me?"
"Huh? Oh... sure."
Yumin brought his face between Suji's legs. No real experience, but he'd watched a few AVs. He had a rough idea. He stuck out his tongue and licked her vulva.
"Spread the outer lips a bit... Yeah, like that. Lick the inner parts softly. Good... Not there yet... Try putting your tongue in the hole? Ahh..."
Like the model student he was, Yumin followed her instructions precisely. Soon, Suji's pussy was slick with her juices and his saliva.
"Aha... Now lick that spot from before... As soft as you can. Yeah... Ahng... You're doing great... Aahng..."
As Yumin's tongue focused on her clit, Suji heated up fast. Her pussy was soaked enough for easy penetration.
"Okay now. Put it in? Yours is pretty big, so go slow."
Yumin's cock had hardened again while eating her out. He gripped it, aligned with her entrance, and thrust his hips. Missed the hole? It wouldn't go in easily.
"Suji sunbae... This right?"
"Mm... Yeah. Yours is just too thick. Push harder."
"Okay..."
Yumin thrust with more force. Suji's tight entrance stretched as his thick cock began sliding in. Once the glans passed, the electric pleasure made his hips tremble involuntarily. Even without experience, he knew cumming right away would be humiliating. Clenching his glutes, he shoved it all the way in.
"Aaak... Hnng... Fuck, it's huge..."
"Suji sunbae. D-does it hurt?"
"No. Just been too long... Stay like this a bit?"
"Sure..."
Even motionless, Yumin felt like he'd cum. The mission only required one creampie, so it'd succeed, but it'd crush his male pride.
"Now... move."
"Okay."
Yumin started thrusting awkwardly. His cock slid out fully, then plunged back in, her inner walls gripping and stimulating him fiercely. He barely managed a few strokes before ejaculating inside her. Even his second load was substantial. When he pulled out, white semen slowly oozed from Suji's pussy. The wall clock stopped.
Participants in the square, please return to your individual cells. Mission participants may also return to your cells now.
"How was it? Feel good?"
"Yeah, it was good for me. But not for you, right Suji sunbae?"
"No, it was good for me too. Been years... Honestly, I came a little the moment you put it in."
"Sorry. About cumming inside..."
"What? That's the mission. Not your fault."
"Still..."
"Enough. Time to head back to our rooms?"
"Yeah. Door won't open, though?"
"Huh. Let's check it out."
"Okay."
Yumin and Suji pulled their pants back on and approached the transparent glass door that had opened automatically on entry. A button labeled Open was beside it—probably for post-mission cleanup without interruptions. Yumin pressed it, and the door slid open. As they stepped out, Gayeong and Minseo rushed over.
"Oppa, you okay?"
Gayeong scanned Yumin worriedly, while Minseo stood by with a slightly sullen expression, silent.
"Yeah, I'm fine."
Return to your original individual cells immediately. See you again for the next mission in 3 days.
"Guess we should go. See you in three days?"
"Yes, oppa."
"Gayeong, stay healthy. Take care, Suji sunbae. You too, Minseo."
"Okay, oppa."
"Yeah, Yumin."
"Hmph."
Everyone dispersed back to their cells. Yumin headed down the narrow corridor to his, names marked clearly to prevent getting lost. As he entered, a click sounded from the iron door—likely the lock engaging. Three more days of solitary confinement began.
The time since leaving the square felt like a dream. The shock of his first time was one thing, but absorbing all the new info was overwhelming. Especially learning his stepsister Gayeong was here—that hit hardest. He couldn't say he was glad to see her safe. Missions carried penalties up to death in the worst case. If they were all like today's, worrying about Gayeong was inevitable. Suji and Minseo too. Imagining another man doing that with them drove him mad. He had to protect these three, no matter what. Yumin steeled his resolve.
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Three days passed. Yumin finished lunch and sat on his bed for a short rest. Right on time, a clunk from the iron door signaled the lock disengaging.
Welcome back, participants. Nice to see you again. Second time around—you know the drill. Gather in the square. No fussing.
Yumin stood and walked the corridor to the central square. People emerged one by one from the radial corridors, converging. Yumin spotted his stepsister Gayeong first. She approached him, Suji and Minseo soon joining at his side. Were these his fixed crew in Paradise(?)?
"Gayeong, you okay? ...Suji sunbae, no pain anywhere? ...Minseo, you good?"
"Yes, oppa. You were okay too, right?"
"Yeah, I was fine."
"Good. You look healthy, Yumin."
"Of course."
"....(Tch, check on me first for once...)"
"Huh? Did you say something, Minseo?"
"I didn't say anything!"