Came to Check My Sister's Man and Got Ruined

"…Okay. Keep going."

The moment the words left her lips, Taeseok tightened his grip on her hand just a little more. A warm energy began to seep from his fingertips and spread through her like something living.

Nothing was visible to the eye, yet she could clearly feel something flowing into her.

…It responds. This… is a challenge for me too.

Taeseok muttered the thought to himself. Ever since the Status Window had appeared and he had gained this unknown power, he had made Eunjeong his woman—but that was only a single case. There had always been the lingering possibility that it had nothing to do with his ability at all. Perhaps it had been the tender feelings she already held for him, or the guilt born from her relationship with his father, that had made her yield her body.

But Eunsu was different. She was a woman with whom he had shared absolutely no prior connection—a complete stranger. Strong, rough, suspicious, overflowing with confidence. If his power worked even on a woman like this, only then could he truly be certain of what he possessed.

He studied her face up close. Even as she felt Taeseok’s energy, she was clearly fighting to reject it. That pleasant heat was melting her body, and she was desperately trying to hide it—exactly the same expression Eunjeong had worn the first time he took her hand.

"Nnngh…"

Eunsu let out a low moan without realizing it. She snapped her mouth shut in alarm, but it was already too late.

"You… what the hell is this… What are you doing to me?"

Taeseok gave a short laugh and put a little more strength into his hand.

"Doing something to you? I’m… just holding your hand like this. Why? Are you feeling something strange?"

Her brows knitted at his words.

"No… that’s not…"

"Holding hands like this… and then, right—Auntie Eunjeong’s face changed into exactly the expression you’re making now. The kind of face that leaves a man no choice but to kiss her…"

Eunsu’s gaze wavered.

"What kind of bullshit is this… What face am I supposedly making…"

Her features were full of wariness, yet she still did not pull her hand free.

"So… you know how it is. I’m a man too…"

Taeseok leaned even closer, until his face was near enough that their lips could brush at any moment.

"That’s how I kissed her."

Eunsu turned her head slightly, dodging. But she didn’t pull away completely.

"So that’s how you forced my sister into it?"

"I… don’t really remember. Whether I truly forced her… or whether we were both drawn to each other and wanted it…"

"What kind of crap is that?"

"Auntie… confirm it for me."

"Confirm what? Don’t—mmph…!"

Taeseok waited no longer. He crushed his lips over hers, silencing the rest of her words.

"Nngh…!"

Eunsu thrashed hard for an instant. Both hands shoved at his chest as she tried to twist her head away, but in that same moment the scorching energy pouring from Taeseok’s lips drove deep into her body. Like electricity racing through her, a fierce wave of pleasure surged from her lower belly all the way up to the nape of her neck.

"Haah…!"

Her body went rigid, then went limp and powerless.

When Taeseok pushed his tongue in deep, Eunsu could no longer resist. Her mouth opened and accepted him. The instant his tongue coiled around hers and sucked, another powerful jolt of pleasure rose. The insides of her thighs tingled and grew wet; she instinctively pressed her legs together.

"Nngh… haah…"

As the kiss grew more ferocious she panted for breath and wrapped both arms tightly around his neck.

Her body was already responding completely beyond her will. Her nipples had hardened into tight peaks, and she could feel the inside of her leggings growing slick and damp. Still locked in the kiss, Eunsu muttered in a breathless voice.

"Fuck… what is this… Just lips… and my body… is so damn hot…"

She sucked on his tongue more eagerly and thrust her own deep into his mouth. One hand fisted hard in his hair; the other clawed at his back, hauling him closer.

"Haah…! I’m going fucking crazy… A kiss like this… first time… You… what the hell kind of bastard are you…"

She sank deeper into the kiss, twisting her hips slightly. Her firm, full breasts pressed hard against Taeseok’s chest, and her thigh slipped between his legs, instinctively rubbing. She seemed not even to realize what she was doing. Shame had already been forgotten; she was baring her desire without restraint.

When Taeseok finally broke the kiss, Eunsu looked up at him with wet, glistening lips, chest heaving. Her eyes were completely unfocused.

"Hey… keep going. If you stop now… I’ll fucking kill you."

Her voice had already melted into something desperate and lewd.

"How was it? Did I… force you? Even this kiss… is it only me who wants it?"

"What kind of question is that. I… already told you to keep going."

Instead of answering, Taeseok smiled and yanked her crop top up with both hands. The thin fabric slid over her taut abs, and the perfect body of a thirty-four-year-old woman sculpted by training was revealed all at once—a sharply cinched waist, abs carved into clear ridges, and full, springy breasts straining against her bra.

When he moved to strip the crop top off completely, Eunsu raised her arms to help him. Next the bra was peeled away by his hands, and her plump breasts bounced free.

"Definitely… firmer than Eunjeong’s."

Taeseok spoke while cupping them in both hands.

"That’s… obvious. At least when it comes to body… I’m better than my sister…"

She was already selling herself as the superior woman to her own sister.

"Shall I… switch over to Auntie, then?"

"You crazy bastard… nngh—!"

Taeseok slid his hand straight down into her leggings. The tight fabric gripped her thighs and ass so firmly that the sensation of his fingers pushing through the cloth was even sharper. Inside, she was already soaked.

His fingers slowly rubbed along the hot folds of her pussy.

"Nngh…! Haah…!"

Eunsu’s hips jerked hard.

The thighs of a professional PT trainer clamped hard around his arm and trembled. She gripped Taeseok’s shoulders with both hands, panting as she muttered under her breath.

"Haah… what is this… I… I really hate being touched there by hand… ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠but this feels too good…"

Taeseok slowly peeled her leggings down. He leaned her back against the wall, lifted one of her legs, and hooked it around his waist. With the leggings still dangling from one ankle, her pussy was completely exposed.

"Do you… want it all the way?"

He deliberately set only the burning head of his cock against her entrance and rubbed it slowly up and down as he whispered. The hot tip glided over her already-drenched flesh, teasing her clit.

Eunsu’s hips quivered; she clenched her teeth.

"Yeah… I… I… want it."

She looked straight into Taeseok’s eyes, breathing hard. Her voice was filled not with shame but with raw, honest lust.

Still not entering her, Taeseok continued to drag the tip of his cock slowly along her folds, tormenting her.

"Really? I only meant to let you confirm… Even though I’m the man your sister is seeing right now, you’re fine with it?"

At those words her pupils wavered for an instant. Her sister’s man. The fact slammed into her mind.

"Haah~ What do I do… nngh…"

"Tell me. Should I… really put it in?"

"You son of a bitch… Then you shouldn’t have made me like this from the start. Nngh…"

The thought that she ought to refuse flickered faintly through her head, but the fierce pleasure of that thick heat rubbing against her soaked entrance made the words impossible.

"Put it in. Put it in me. I don’t care if you’re the guy my sister’s with. Just… fuck me."

‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠

Taeseok laughed softly at her words. He pressed his lips right against her ear and whispered.

"Then… I won’t hold back."

Still not thrusting all the way, he only stretched her entrance open and rubbed the head a few more times. When her pussy twitched and tried hungrily to suck him in, Taeseok finally began to push his hips forward, slow and deep.

"Aaaang…!!"

Eunsu’s head snapped back against the wall as a sharp cry tore from her throat.

She instinctively shoved at his chest with both hands, trying to pull her body back.

"Hey!!! What the fuck are you putting in me right now? Is that… really yours?"

She hurriedly looked down between their bodies. Her eyes flew wide. Her pussy was stretched obscenely open around Taeseok’s cock, which was already half-buried and absurdly large.

"Crazy…"

Eunsu swallowed hard in disbelief. The overwhelming size and thickness were something she had never seen in her life; even fear mixed into the sensation.

Taeseok savored her reaction, lifting his hips a little higher and driving deeper.

"Haaahk…! Too… big… and hot…"

She clenched her teeth around the moan.

"Haah… haah… I’m really going crazy… Putting something like this in… and still having a normal woman left…"

"You saw Auntie Eunjeong was fine, didn’t you?"

Eunsu buried her face against his neck and whispered almost like she was about to cry.

"Haah… What do I do… aaang~"

Her firm, trained thighs clamped hard around Taeseok’s waist, and her pussy squeezed him greedily as if refusing to let him go. He gripped her ass with both hands and began to move his hips in earnest.

Thud. Thud. Thud.

Every time her back hit the wall, her breasts bounced heavily.

Fuck… her body is insane. Auntie Eunjeong’s been incredible lately too, but the little sister’s been maintaining hers the whole time so it’s on another level. What happens to this body once it gets the Blessing of Beauty buff…?

Eunsu’s pussy still hadn’t adjusted to the size and could only clench tightly around him.

"Haah…! It feels… so good… I never knew being filled this full could feel this good."

She made no attempt to hide her feelings; instead she voiced them even more lewdly while clinging to his neck.

Her elastic, flexible body answered every thrust perfectly, rolling her own hips to take ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠him even deeper. Taeseok pressed his lips to her ear and growled roughly.

"Now… do you understand why Auntie Eunjeong gives her body to me?"

At those words Eunsu’s whole frame shuddered hard. She hid her face against his shoulder and answered in a choked breath.

"Shit… I think I get it… If I got fucked every day with a cock like this… who the hell… could hold out…"

The moment she finished speaking she yanked his neck closer and shoved her tongue deep into his mouth. Her pussy clamped even harder around him, gushing hot fluid.

"Harder… Do it harder… Fuck me harder than you do my sister…"

After the sex ended, Taeseok’s room was thick with the sound of their breathing and the heavy scent of the fluids they had spilled. Eunsu sat slumped against the wall for a long time, unable to stand. Hot cum still trickled stickily down the insides of her thighs, and her swollen pussy fluttered in a slow, rhythmic pulse.

She gritted her teeth and slowly forced herself upright. Then she began tugging the leggings that still hung from one thigh back into place. Legs pressed lightly together, waist bent forward, she pulled the fabric up inch by inch. The tight material squeezed her sweat-slick thighs ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠hard as it rose, and the cum still leaking from her soaked into the inside with a wet sheen.

"Haah…"

She let out a small breath. The moment the leggings fully covered her ass, her puffy pussy was pressed tightly by the fabric; the sticky sensation was unmistakable. Once the leggings were completely on, she pulled the crop top back over her head and smoothed a hand across her chest. Without a bra, the sweat-damp fabric clung to her breasts and outlined their shape with shameless clarity.

Eunsu glanced at the mirror with her hair still a mess. Confused thoughts poured through her mind.

How the hell… did I end up with a kid like that… I only came out of curiosity, to check what kind of guy my sister was seeing… and I got completely wrecked like this…