By Zephyria 
Tae-un rubbed Kim Si-baek’s trembling back and showered his face with kisses, as Si-baek struggled to breathe, feeling as if his throat were completely blocked. Though the pain persisted, his ragged, wheezing breaths gradually steadied.
“The… huff… glans is in.”
Tae-un’s voice was also fragmented and slightly strained, having barely managed to insert only the glans into the stubbornly tight hole.
“Should we stop if it’s too hard?”
“It’s already… hng… torn… how can I let you stop now, when it’s such a waste?”
“It’ll hurt more…”
Si-baek shook his head, which was leaning against Tae-un’s shoulder. It did hurt more than he expected, but it was bearable. On the other hand, he wondered if a size like this could actually be fully inserted.
“I said I’m fine.”
“…Tell me if you want to stop, Hyung. If you can’t even speak, just pull my hair.”
Kim Si-baek let out a small, involuntary laugh at the last remark, his body trembling slightly.
“Don’t make me laugh. My stomach is vibrating, ugh, it hurts more…”
Waiting for the laughter to subside, Tae-un began to move his hips slowly. Whether it was because the blood acted as a lubricant or because he had successfully inserted the thick glans, the insertion felt slightly easier.
The sensation, which had begun to grow accustomed to the pain, snapped awake at the unfamiliar intrusion. As the thick genitals pushed in slowly, rubbing against the torn wound and filling his lower abdomen with heat, Kim Si-baek bit hard into Tae-un’s shoulder.
There was no way it wouldn’t hurt, as it carved through the raw, torn flesh. New layers of pain piled up faster than he could get used to them. The constant friction on the wound below and the dull heat forcibly filling his belly pushed him to a point where it felt as if the only sense left in his entire body was pain.
As the pain rose without end, Kim Si-baek chewed on a breath with a soft hng, bit Tae-un’s shoulder, clenched his teeth, and gripped Tae-un’s back. His shoulders heaved violently, and cold sweat drenched him down to the nape of his neck.
“…Hyung, it hurts, doesn’t it?”
Tae-un pressed his lips against the furrowed brow twisted in agony.
“I’m going to put it all in at once. I think it’ll be better to just get it over with in one go.”
The hips that had been entering slowly seemed to pause for a moment, and then a stubborn force was applied.
“Ahk! Hua, ah!”
A moan bordering on a scream shot up sharply. Pushing open the thighs that reflexively tried to shrink away, Tae-un pressed down violently, as if he didn’t care about the bleeding wounds.
Si-baek’s breathing became a tangled mess, unable to keep up with the speed of insertion, and his flailing hand slipped from Tae-un’s back. Tae-un grabbed that hand, pinned it to the bed, and thrust his hips hard. Finally, the thickest part of the shaft pierced through the entrance, carving through the flesh.
“…!”
It felt as if he were being impaled by a red-hot iron rod. At the extreme pain that surpassed the limits of reason, not even a scream could escape. Even the inner walls, which had been stubbornly closed, were forced open, nearly tearing apart. As he was relentlessly hammered from below, it felt as if his body were being sliced in half at the point of insertion.
A pain akin to a heavy hammer slamming inside struck his lower abdomen. His head snapped back reflexively, and the pressure of the impact from below blocked his chest, suffocating him. He finally realized that it had been inserted to the very root. Tae-un’s ragged breath poured over his face.
“Hng, ugh! This… this is impossible…”
More than the pain of being torn and carved open below, the fact that Tae-un’s member had completely entered his body was somehow more shocking. He instinctively reached between their joined bodies to feel his lower abdomen. He could feel the skin bulging, not just filled, but protruding.
“You really… hng… put it all in…”
“Yes…”
Tae-un chuckled softly. Then, as if inviting him to feel it with his body, he moved his hips slowly. The sensation of the genitals, packed so tightly they felt like they might burst, scraping against the inner walls in a circular motion was transmitted vividly.
“Ah! This is too… hak!”
Even speaking made his lower abdomen churn. Kim Si-baek reflexively gripped Tae-un’s forearm.
“Hyung, how does it feel?”
“S-strange… ahh, it’s really strange.”
It was as if his vocabulary had rapidly deteriorated; coherent thoughts wouldn’t form in his head. It would have been better if it were just pain, but the insertion of another person—something he had never imagined experiencing in his own body—brought a strange sense of bewilderment.
Kim Si-baek’s shoulders heaved as he carefully touched Tae-un’s face. He couldn’t be sure because the lights were off, but at the very least, Tae-un’s expression wasn’t distorted.
“…Do you like it?”
“Hyung is tightening so much I feel like my cock is going to snap, but I’m confident I could die of pleasure right here.”
How long had it been since he told him to stop talking about dying? He pinched Tae-un’s cheek in reproach, but his weak hand soon slipped away.
Tae-un slid his arm beneath Si-baek’s back and held him firmly. Their bare chests pressed together, and Tae-un’s heated body temperature enveloped him. His intermittent, erratic breathing gradually melted away while held in that hot embrace. After catching his breath a few more times, Kim Si-baek patted the back he was hugging, signaling that he could continue.
“I’m going to move.”
Tae-un, who had waited for Kim Si-baek to adjust to the insertion, let out a heavy breath. Si-baek expected him to start pistoning immediately, but instead, Tae-un thrust shallowly and rotated his hips gently. Even though the movement wasn’t violent, the feeling of the inner walls—clinging and tightening as if suctioning—being rubbed was so vivid that Kim Si-baek swallowed his breath.
Though the pain at the entrance remained enough to make his taut thighs tremble, he couldn’t stand the movement of the inserted genitals carving through his abdomen from the inside. He could endure the pain, but this was too strange. He didn’t know if it was just his imagination, but it felt as if Tae-un’s member was searching for something inside him, which made it even stranger.
“It’s strange, so just…”
Just as Kim Si-baek was about to tell him to move however he liked, his voice cut off unnaturally. While he was off guard, a tingling sensation surged from his lower abdomen. A shiver ran down his spine. He knew in theory that men could feel pleasure, but this…
It sounded foolish, but until now, he had never once considered the possibility of feeling pleasure during sex with Tae-un.
In an act that had been more of a ritual—swept up in Tae-un’s longing and carving each other into one another rather than sex for the purpose of pleasure—his own desire was finally overlaid.
When a startled Kim Si-baek clamped his hand over his mouth, Tae-un, who had been exploring by slowly rubbing the inner walls, curled one corner of his mouth upward.
“Ah, it’s here.”
Asking what ‘here’ was would have been even more foolish. In his desperation, he hoped Tae-un would pretend not to know that spot, but once Tae-un had decided, he was not as compliant as Si-baek wished.
With him buried to the root, Tae-un began to poke at the thick, hidden area of the inner wall. Si-baek tried desperately to divert his mind, but even amidst the dull pain of the torn area below, a tingling sensation leaped up.
“Hng-uuu…”
“Are you… starting to feel it?”
Having asked the question, Tae-un didn’t even wait for Kim Si-baek’s answer before reaching down to touch his genitals. The cock, which had been limp due to the shock of insertion, was gradually regaining strength. The smile on Tae-un’s lips deepened at the evidence, which was as certain as the excitement mixed into the moans that had previously only been about pain.
If the night lamp had been on, Kim Si-baek would have read that smile, sensed that Tae-un was about to do something, and prepared himself mentally, but unfortunately, the room was pitch black. Because of that, Kim Si-baek, who was adjusting to the small, shallow movements while deeply inserted, was startled when he suddenly felt him slide out. And before he could even follow the movement, the genitals slammed back in all the way to the root in one go.
“Huaak! Hak!”
The walls of flesh were still stiff and dry, but Tae-un pushed in relentlessly through the path he had already opened. The thick glans struck the spot without a hint of mercy, and the thick shaft, with veins bulging, rubbed against it roughly.
In an instant, Kim Si-baek’s vision went white. The pain of carving through raw, bleeding flesh and the blatant pleasure of directly stimulating the sensitive area surged and mixed together in a chaotic whirlwind.