RE: Keep it in the Family (Secret Class)

Su Ah's POV:

She paused and exhaled, slowly releasing the air she didn't know she was holding.

Her mind went into overdrive. She had read about it countless times, but this was... different. Nothing could've possibly prepared her for the reality of having the heavy flesh inches from her face.

His eyes were so scalding hot they were burning her alive. His hand curled over her head. It didn't pull, didn't press or urge, simply stayed, tightening its grip. She had no doubt that he'd be soon getting forceful with her.

What the hell was she supposed to do?! Should she kiss it? Or... Or-or, lick it...? Or—?

She just wasn't mentally prepared.

A sliver of courage, and the prospect of doing something wrong and exciting, drove her forward. She'd follow her instincts.

Her tongue, pink and hesitant, peeked out to swirl around the head. The skin was surprisingly soft. She lapped away a pearl of pre-cum that beaded at the slit.

A sharp, hissing intake of breath from above her was her reward. Jae-il’s hips jerked, pushing more of his length against her lips. Su Ah's eyes fluttered shut as she savored the taste, the slight saltiness, that musky, male flavor she had never found the right description for.

Su Ah curled her tongue, hesitantly slipping the moist tip along the flared edge, before pulling her head back, jaw almost dropping in bewildered astonishment at the sharp thrill that sparked and ran straight down to her core. She gulped nervously, her body seeming to get a hundred degrees warmer than it already was.

So she did it again. The stroke of her tongue and the shiver through her bones as she felt his skin bunch in her mouth was astounding. She felt a surge of wet heat at her sex and had to keep her hands on his powerful thighs to steady herself, her knees growing weak.

The sense of control was unexpected and incredible.

She pulled back once more to peer up. The strained tension of his neck, the way his eyes burned in his face was exciting. It was... empowering and she was drunk on her own newfound, undeniable power over her little brother.

Who’d have thought that it took so little to get him so easily wrapped around her tongue?

Wetting her bottom lip, she repeated the move, licking more broadly now, the taste growing headier with his arousal. A strangled sound rumbled through the broad planes of his chest and vibrated into her palms. She was sucking in deep breaths between each broad stripe, overwhelmed, feeling herself flush red with effort and excitement.

It was... astonishing, a drug, something like this, having that same taste explode over her tongue over and over. A physical substance that coated her swirling tongue, making her head fuzzy, her body hotter. With his fingers lost in the wild disarray of her hair, his knuckles tightening as she grew creative.

A long, protracted moan ripped from his chest. The effect it had on his erection, making it twitch so violently under her tongue, made her bolder.

Circling her tongue around the crown, she went deeper, over the shaft. He didn't give any warning before he rocked his hips against her mouth and speared past her parted lips to sink into her mouth. The groan in his throat turned hoarse and thick, the sound dripping over her nerves, sinking deep into her belly.

His legs and hips trembled slightly. "Oh god. Su Ah, your fucking mouth." He moaned, almost out of himself as his fingers locked in her hair and made fists of it. Su Ah flicked her eyes upwards, sucking gently. His jaw had slackened and she saw his sharp incisors behind parted lips as he hissed out an exhale. "Fuck, keep going..."

Su Ah sucked on him, tightening her lips and curling her tongue. She was inching a fraction further, seeing just how much she could take, how far that crown would dip in her.

The hand fisted in her locks went limp and heavy and started guiding. It urged her lower, then lower yet, the width at the very back of her tongue forcing her jaws wider to accommodate.

He still wasn't completely in her mouth, and it was difficult to relax around the invasion, her mouth tingling with nerves and unease as well as pleasure. Then she found herself moaning. The sound shuddered up into Jae-il and his cock slid further in as his hips rocked against her.

A faint 'gukh' left her mouth, followed by an overabundance of saliva that trickled in lines between her tongue and his hot length. Her eyes widened. She gasped as her gag reflex finally, abruptly, triggered and her body reacted in panic and shock. She gagged, spluttered, eyes watering. Her airways blocked. She freaked out, pulling free, and looked up as she tried to breathe.

"Are you okay, Noona?" Jae-il somehow managed to steady his voice as he peered down at her with obvious concern... and desire. Clearly, even this near choking incident was somehow, very weirdly and embarrassingly, turning him on.

His cock stood defiant as ever between them, with its proud, shimmering coat of drool that still connected it to her open lips.

"I-I'm fine... sorry..."

He sighed. "Don't overdo it, Noona. If you want, we can—"

"No. It's fine."

She could only imagine how far her Unnie had gone for him, and would give this the same commitment if only so as not to be surpassed.

Su Ah was breathing raggedly now. Her eyes, watery from her near death by asphyxiation, focused on that thick, curved length before she reached out and fisted it, the flesh bulging from between the circle formed by her hands. She gave it a few slick strokes, aided by her own dripping drool, and spread it further across that delicious looking flesh.

Jae-il's purr turned into a drawn-out growl, which morphed into a hiss and a string of curses as Su Ah boldly took him back into her mouth.

And he growled, biting and gritting his teeth as not to let the loud noise echo beyond their own little bubble.

Su Ah almost faltered. She didn't think there was a word to describe how manly and sexy that sound was, and the thought that it was only hers to hear, that no other woman but her was getting off on these noises he made. That she alone was causing this much pleasure. It sent an answering coil in her clit, a flutter that was building rapidly.

Su Ah instinctively dragged the pad of her tongue along the veiny shaft. His hips shifted, thrusting again, just once, just a bit further.

Her fingers sunk into the muscles of his thighs.

"Guukgh~♥" Another gag reflex kicked in as Jae-il's member pushed deep at the back of Su Ah's tongue. And before she realized it, his cock was wedged deep into the tight muscles of her throat. Su Ah's eyes rolled up, her head lost its strength, and for a moment she was confused about what was happening until her nose pressed into his groin and Jae-il cursed again. "Guukgh~♥ Guukgh~♥ Guukgh~♥"

Her head, as if it a will of its own, began a soft, probatory bobbing motion. Her throat felt so tight. The air so thin. Was she about to throw up or pass out? She didn’t know anymore, and didn’t even care.

Despite knowing her brother was almost suffocating her, Jae-il's purrs had died a brutal, merciful death and her ears were now filled with nothing but his groans, loud and straining, growing even more mangled as he climbed that beautiful peak that was ecstasy.

Fuck. There were a million things wrong with the situation, a thousand of them taboos. Yet Su Ah realized that she had never felt like this before, had never felt anything remotely close, as she fought not to run out of breath.

"God, it's so fucking amazing." Jae-il sounded dazed, and, when Su Ah raised her eyes and dared to meet his gaze, she discovered his eyes were wide and filled with something close to awe and pure wonder, lips agape.

Su Ah pulled back for a quick, frantic breather, but, to her dismay, her throat couldn't bear being away from her brother's dick and protested, resulting in more guttural, lewd gluck, gluck, gluck sounds.

Bleary eyes blinking. Stinging with tears, she pushed the panic and focused on the sensation, relaxing around him. In. Out. Slow. Harder. Faster.

Lewd and perverse sounds came from her mouth, it was sloppy. Soaked and drooled.

Naturally, Jae-il followed his basic instincts, unable to restrain himself as his whole body seemed to seize when the sensitive tip was sliding down her throat.

Su Ah had forgotten about the existence of breathing entirely.

Her thoughts were a mess, the pain, discomfort, the stretch and slight choking being overridden by her need to make her brother feel good. He liked this, and so Su Ah let him rock into her a little faster.

Her thighs were soaked, slick fluids gathered around her sex and trailing to the apex of her thighs. Every glide made her walls tighten in emptiness, aching, she didn’t realize she was spreading them, circling her hips and rubbing her ass on the sheets, giving an insistent whine at the empty sensation between her legs.

She heard him release a shuddering breath. He brushed back the hair that fell loose over her eyes in an absurdly gentle manner, only to yank hard and fill her mouth full when his cock swelled bigger inside her.

One sharp thrust. Two thrusts, then three. A shudder went up her spine, her pussy clenching at the rough pull. Then all at once she felt herself come, gushing wet, as her tongue grew heavy and loose. She collapsed a bit, and she must have done something she wasn’t expecting, because the last few pushes of him rocking into the tightness of her mouth felt more labored.

Almost right on cue, Jae-il let out one final, tormented, strained snarl. "Fuck, Noona—!" His abdomen pulled and tightened into an impossibly-steep concave of muscles, while his legs began quivering erratically, and that was it, she understood what it meant.

His hips twitched, stuttering in place, and he groaned like he had the wind knocked out of him. Something snapped, his limbs spazzed and shook, and suddenly he was flooding her mouth and pushing against her tongue with a furious force.

Su Ah's eyes lolled into their back. Oh God, was all she could think.

She was practically being assaulted in the most wonderful and terrible manner possible, with liquid pouring and spilling onto her tongue, salty, musky and strangely intoxicating.

‘Jae-il’s… cum…’

It was hard to think, to compute, to even comprehend, that this day had actually come. Everything that she had used as a fuel to drive her writing forward… was happening right now.

"Krnf..." Su Ah gagged, the back of her throat sore and raw, her lungs struggling to breathe around the swollen head, but his fingers locked in her hair as he hosed it all inside.

Before Su Ah knew it, a river of cum came forth, splashing against the tender walls of her abused throat, sending her reeling back for more air before another massive load went off straight onto her tongue.

Then a third one that streaked across her dazed features. And lastly, a fourth spurt that just shot into the air and drizzled on her sweaty, slick thighs.

The aftershocks lasted for a few moments before Jae-il backed off, leaning against her desk. His cock, now semi-hard, continued dripping all over the floor.

As for Su Ah?

She slumped back on the mattress, feeling a throbbing coming from somewhere south. She still had the taste of her brother in her mouth and as much as she wanted to spit his essence, she just couldn't do that.

This was the taste she could get addicted to.

With her eyes firmly, dazedly, on the ceiling.

She slowly swallowed.

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