Disqualified as Teaching Assistant Volume 2.3

T/N: NSFW! 18+ only ;-; I am posting shorter chapters for my sanity

“Sir, just a moment.”

Then, rather than facing Seungjo, it would be better to position himself so only his back was visible.

“Stay still.”

“I want to do it from behind.”

Giyun grabbed Seungjo’s arm and pleaded. The fingers pressing firmly around his perineum stopped moving instantly.

“What?”

“Doing it from behind… I like it better. So…”

“…”

Seungjo seemed momentarily lost for words, offering no reply. A stunned expression flashed across his face, as if he’d been suddenly hit on the back of the head, then faded into a subtle expression that was neither a smile nor anger.

Seungjo blinked his eyes slowly open and closed. Taking a deep breath, as if to suppress his emotions.

“Ah… I see.”

“…”

“Damn, your tastes are solid.”

Seungjo flipped Giyun over like a pancake. He could have just said it, but his touch carried personal emotion.

Giyun’s body spun roughly, only to face another problem. His genitals touched the black leather sofa, smearing the dried semen from his tip across the surface.

It would definitely leave a white stain. Startled, Giyun tried to sit up, but before he could, Seungjo pressed down on the back of his neck from behind.

Giyun was pinned down again, unable to move, face down on the sofa.

“You little brat.”

“Wait, the sofa… Ugh.”

“You’re so damn clumsy with everything you do.”

Along with that voice suppressing anger, something shocking happened.

Without warning, Seungjo’s hard member forced its way into the hole that had never received anything before.

Giyun gasped in shock. The distinct sensation of the foreign object forcing its way in, stretching his inner walls, sent shivers down his spine.

But as Seungjo steadily repeated his back-and-forth motion, Giyun’s rigid body gradually relaxed. He was moving inside him. He and Seungjo were, unbelievably, having sex.

Giyun soon adapted to his movements. The foreign sensation remained, but it wasn’t unbearably painful. He’d worried about it being his first time, but it was manageable.

Maybe he’d been too scared. Just as Giyun exhaled in relief, his tension easing…

“…It’s too tight.”

Seungjo muttered awkwardly after probing inside a few more times.

It wasn’t that narrow… Giyun turned his head in puzzlement, only to freeze in shock the moment he looked behind him.

Seungjo still hadn’t taken off a single piece of clothing.

Come to think of it, he hadn’t even heard the sound of a zipper being pulled down.

What the hell? Hadn’t they been having sex? Then what had he put inside me?

Giyun’s voice came out trembling.

“Until now… what did you put in me…”

“My finger.”

He pulled his middle finger out of the hole and showed it to Giyun. The long, thick finger, coated in Giyun’s sticky semen, glistened with its own sheen.

The frustration that this was all it took, that it was just a finger, and the horror that he had put his finger inside his back hole, hit Giyun’s head simultaneously, making his mind go blank.

Whether Seungjo knew about Giyun’s state of shock or not, he seemed awkward in his own way.

“There’s no lube… If we’re not careful, it could tear.”

It sounded like Seungjo was saying this was the end. It felt like a roundabout way of saying it wouldn’t work with him. Giyun snapped back to his senses.

After overcoming so many hurdles to get this far, he couldn’t let it end like this. Of course, he was scared to death too, but letting it fizzle out now would be worse than never starting at all.

He wanted to beg Seungjo to reconsider, to say it wasn’t true, but he held back that urge and answered as flatly as he could manage.

“Ah, no, it’s fine. I can put it in.”

“You can put it in?”

“Yes. If I put it in… it’ll all go in.”

“…’If I put it in, it’ll all go in’.”

After a moment of silence, he chuckled, sounding exasperated. It didn’t seem like he was laughing because it was funny. Then, his voice dropped low, his teeth clenched.

“This makes me want to punch you.”

Giyun flinched in shock, his hips jerking back. His inner walls contracted instantly. His frightened lips trembled violently.

He’d only tried to stop him, but he couldn’t tell what Seungjo was angry about. Did his suggestion to continue really offend him that much, or what the hell…?

Leaving Giyun curled up in a ball on the floor, Seungjo abruptly stood up from the sofa. Giyun, thinking he was leaving for good, jumped up in alarm.

“Uh, where are you…”

Unable to even say “don’t go” to him as Seungjo turned and walked away, Giyun could only bite his own lips in frustration.

He sat up as straight as possible to assert his presence, but his legs were crossed awkwardly on the sofa to hide his arousal, a posture reminiscent of a mermaid princess.

Giyun couldn’t bring himself to stand fully, ashamed of his nakedness.

He wanted to chase after Seungjo, but unfortunately, his attire wasn’t suitable. The only suspicious thing about Seungjo, who was perfectly dressed down to the last button of his tie, was the faint trace of Giyun’s semen on the very edge of his shirt cuff.

In contrast, the only thing currently covering Giyun’s body was a pair of white socks. Even if he kicked open this door right now, following him out would be difficult.

Knowing this, Giyun anxiously stared at Seungjo’s retreating back.

In the end, Seungjo didn’t head for the door. He walked to the desk and retrieved his wallet.

Why the wallet…?

Before Giyun could fully process the question, Seungjo pulled out a square black plastic thing from inside. The sarcastic remark that followed was just icing on the cake.

“If the expert says so, I guess I have to do as I’m told.”

“…”

“Get on your hands and knees. Your favorite position.”

…Thank goodness he didn’t leave.

Giyun hesitated, then bent over the sofa again.

It took him a moment to realize the black plastic was a condom. He’d often sold them during his convenience store part-time job, but he’d never seen them individually wrapped. He’d only ever handled them by the box, never actually used one himself.

Condoms… He almost said he didn’t need to use one, but somehow felt it would only make him angrier, so he held back. Experience had taught him that his unnecessary comments never improved the mood.

He heard the sound of his pants zipper coming down for the first time, though Seungjo hadn’t even taken off a single layer of clothing yet.

His heart was pounding so hard it felt like it would burst. Giyun couldn’t bring himself to look back, fixing his gaze straight ahead. He absentmindedly squeezed and released a nearby cushion.

The sound of skin being stroked rhythmically filled the air.

His hands touched my thighs and buttocks. With one hand, he massaged my buttocks, while the other was masturbating.

His breathing wasn’t excited; it was slower and deeper than usual.

What expression did he have on his face right now? What look would he wear when feeling pleasure, what sounds would he make?

Giyun suppressed the urge to turn around, nurturing his imagination alone.

Was he really erect? It had felt distinct during their first kiss, but who knew how his feelings had changed since then.

Maybe seeing his erect state had actually cooled Seungjo off.

Come to think of it, I was the only one who ever came, the only one who ever enjoyed it.

Didn’t he just get angry at me every time we talked?

But Giyun also knew well that he wouldn’t force a relationship with me if he wasn’t aroused. Only that fact offered me any comfort.

The sound of flesh being stroked and touched soon stopped. A tearing sound followed, like plastic being ripped.

Giyun swallowed hard, tense. He tried to relax as much as possible, but he couldn’t tell if it was working. He still didn’t have the courage to look back.

Then, he felt Seungjo trying to thrust his fist insided him while still not fully loosened.

“Aaah!”

Yes, it was his fist.

Giyun, feeling terror beyond compare, couldn’t hold back and screamed.

“Really, if you really put your fist in…!”

“What are you talking about?”

Giyun spun around in terror. A man with a glans the size of a child’s fist and a shaft as thick as an arm was glaring at him. The blood drained from Giyun’s face.

“It didn’t even go in.”

He couldn’t possibly fit that in. Giyun knew it the moment he saw it. Not everything needs to be experienced the hard way to understand.

Honestly, since a finger went in without issue, I thought it would be fine.

But that thing was a size impossible to gauge with just one finger. It was just too big.

Seungjo was tall, had a large build, big hands and feet…

I didn’t expect anything small about him. But did his penis size have to be like that too?

My skin isn’t infinitely stretchy rubber; putting something like that inside would tear me apart.

I wanted to have sex with him, not put on a strength show. But…

“Why? Can’t you do it?”

“…No.”

Even though the painful future was painfully obvious, I still didn’t want to stop.

I turned my back, resigned to whatever would happen.

I clenched the cushion in my hand. If it really felt like death, I was prepared to bite down and endure it.

My head was buried in the sofa, only my hips raised as the penetration began.

I knew it was an unbearably humiliating position, but since all I could see was the sofa leather in front of me, it was enough to deny reality. He didn’t want Seungjo to see his foolish face.

Giyun felt him apply pressure with his fingertips, spreading the surface folds. The blunt head of his cock touched the entrance, not yet fully relaxed.

The slippery surface of the condom, thinly covering the hot, large shaft, rubbed around the opening.

Despite Seungjo’s efforts to enter with minimal resistance, the excessively large penis struggled to penetrate the narrow hole that had never accepted anything before.

The tip of the glans barely caught on the lubricated opening. Giyun thought he was finally inserting his fist.

“Ugh, huff.”

“Relax.”

“Fist, fist…!”

“No. Relax.”

Giyun, his voice dying away, kept screaming for the fist time.

Seungjo clenched his teeth and answered. He didn’t want to, but anger kept surging.

Had he only ever picked and dated guys with penises the size of fingers? It wasn’t his first time, yet his whining was top-notch.

Seungjo moved his hips with patience, very slowly. It was the exact opposite of what his instincts demanded.

The vivid sensation of the warm, clinging walls that had gripped his finger was still fresh. Thinking his own cock would be received like that made him want to thrust roughly deep inside right now.

Since there was no worry about pregnancy, he wanted to tear off the condom, feel his flesh with his bare cock, and cum inside Giyun over and over.

Doing that would tear his tender flesh and make him bleed, but he didn’t care. Eun Giyun had brought this on himself.

That mouth of his, spouting that worn-out line about “it all goes in,” was infuriating enough to make Seungjo want to move without mercy and make Giyun regret saying it.

Whether he bled or not, whether he wailed and cried in pain or not, I wanted to punish him.

But truthfully, Seungjo had no reason to be angry at Eun Giyun. The fault wasn’t his

The problem was me, getting disgusted every time I heard that kid spout his cocky nonsense. So, even if I mocked myself, I couldn’t blame anything on the other person.

Knowing this, Seungjo tried desperately to hold onto the last shred of his sanity for as long as possible.

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