Mia’s POV:

Ever since Mia realized just exactly why her heartbeat grew faster every time her gaze fell upon her brother, she knew what this was, what she had.

There was no rational or logical method of describing these sorts of feelings, these desires, these urges to the point that, as much as Mia wished there was, the simple truth remained that there were no better words than simply calling it what it was, love, attraction.

The incestuous kind.

If her feelings of a deeper, more than platonic level towards her own sibling was not already bad enough, the realization that, among all the siblings in the entire family, the object of Mia's affection happened to be none other than the youngest, the baby, the sibling of whom her mother adored.

Perhaps the universe had been playing a cosmic joke at her, maybe. A gag to laugh at the depths of her foolishness. And an idiot, stupid, selfish bitch that she was, hadn't the courage to confront these feelings to save face, or reputation, and she had a single worst-case scenario in her head.

What if the worst-case scenario did come to pass?

Would it really change anything if her parents came to know of what their daughter and son were soon to be doing?

Jae-il lay beneath her, his sculpted upper body naked, muscles twitching and shivering. His trousers were opened wide and his manhood was free.

He was free, he had surrendered to her. And himself. No longer did the responsible brother hold her off and back away, no longer did the brilliant, incomparably bright child run away from what was happening and act surprised when he saw just how intense a heat could be—especially if stoked by her tongue.

Mia’s eyes trailed every fiber of this beautiful man’s body. Strong, powerful muscles sculpted by a god in the form of a professional sportsman, glistening and alive under the soft, dim light. Breathing, slowly. She had lost count of the seconds she had spent just staring at him, from the pulsating vein on the center of his neck, the protruding collarbones, to the slopes of his lean pectorals. His chest rose and fell in shallow, silent breaths, rippling with his slow movement.

She stared, far longer than would probably be comfortable, drinking it in. Drinking him in.

Her hair was tied into a messy tail, done hurriedly, and clumsily, because her hands were fucking shaking.

Mia's eyes, acting as a tourist guide for all parts Jae-il and every place she had explored until now, moved lower still to the prominent hip-lines, carved, defined. And his—

She gulped, eyes wide, tongue hanging ever so slightly out her lips. God had left no aspect of her brother's beautiful body to imagination. He had gone beyond in making sure that what should have, by all intents and purposes, not existed anywhere, was completely real.

Jae-il was fucking big.

Proud, thick, veiny—in an almost art-like way.

She wrapped her fingers around it, closing her fist around his dick as best as she could. Jae-il hissed, throbbing. Her eyes widened even further. Her lower jaw hung loose, her heart galloped madly and a sort of madness she could barely wrap her head around, filled the recesses of her being. She stroked up and down, as slow as she could.

His hands clenched, grasping the bedsheets. She saw the pulse on the vein on his neck flicker.

Mia couldn't even breathe, she was so utterly taken. Her hand twisted slightly, tugging down once again.

"Mhm..." Jae-il gave the smallest, most subdued and quiet of a moan. And it drove her mad.

She stared at his pulsing shaft, girthy and veiny and engorged.

Her hand worked her brother's throbbing arousal. She wasn't sure whose racing heartbeat could she hear, could it be hers, could it be his?

Purple-pink eyes stared down at her, wide-eyed, entranced.

As she kept stroking, working on that beautiful mast, she noted somewhere, very vaguely, very dimly, the sounds of her own muffled and shallow gasps for air.

Mia sucked in a shuddering breath, held it, and, before she could exhale and start gasping, pushed her tongue against his slit, sliding her mouth over him, sucking down to the ridge.

It was an impulse, something she instinctively and immediately found herself wanting to do. She had thought of it earlier, but now that it was in front of her, twitching, as if alive, the warmth she felt surging through it, she could not find herself wanting to wait anymore.

With an audacious and enthusiastic thrust forward, her teeth brushed against his bare dick, grazing it.

Jae-il responsed with a wince. "Careful with the teeth..." He gasped.

She lifted her upper lips and turned a reassuring, wide eyed gaze, to say sorry, and to tell him: don't worry.

They made eye contact, before she proceeded to take the full girth of her brother's thickness back into her mouth, no teeth—a bit more careful this time.

She opened her jaw, making the rest of it fit and sink into the deep, hot, wet cave that was her mouth, sliding over her tongue. Jae-il watched as she began to bob her head up and down while holding the hilt of his cock with a hand, keeping it firmly in place, not that it could possibly go anywhere.

This time, her teeth only grazed ever so gently over his veined cock, almost completely innocently. Once he confirmed there was no risk of any puncturing of flesh, he threw his head back once more and moaned. Hearing that heavenly sound rumble in the back of his throat, Mia started to suckle with more enthusiasm, using both hands and her mouth at the same time, determined to taste his orgasm.

A glistening film of saliva soon sheathed his flesh, some of which gathered in droplets at the corners of her lips only to trickle down his length with each downward bob, a trail that she would hungrily clean away with a wicked curl of her tongue on her next pass.

It was her first time giving a blowjob.

In fact, it was her first time doing anything sexual, and yet it somehow made sense to her. How, she had no idea. The only thing she could fathom was how utterly satisfying this action made her feel.

How utterly drunk.

Euphoric.

Sense-numbing and nerve-rending at the same time.

"Noona..."

"Hmm?" She looked up at him, slowly shuffling beneath the blankets, until her head peeked through from beneath the white sheet. A lump of darkness where only the hint of her eyes could be seen. A large, engorging cock and its slit poking at her mouth. She lifted his member, guiding it upwards, laying a chaste kiss over its sensitive top. She dragged her lips over its sides, feeling him.

"Damn it, Noona..."

The breathlessness and gritting of his words made her whimper softly, her thighs pressing together instinctively. She had not even touched herself, she'd only sucked him—was this what she'd been missing out on? Why, now that she finally had tasted a bit of this kind of sex, had she denied herself for so long? It was like the best food in the world had been placed right next to her and she had starved it.

"What's wrong, Jae-il? You wanna come? Then come."

She unfurled her long, rosy tongue, and let a copious amount of saliva drip off its tip. The glimmering thread coated his throbbing cock like frosting.

His breath hitched and she smiled. When her warm tongue was once again glued to his slick shaft, it became obvious why, his head had swollen twice its size, his scrotum drawn tight.

She gasped at its size, or length, or just the overwhelming heat. Then, with her hand, she jacked him. A slow build-up that gained momentum with each stroke of her tight grasp. "Jae-il, say something. Is it good?" Her tone was in equal parts teasing, curious, and concerned.

After all, she had never done anything like this. What was the appropriate way to have done it anyway, beyond imitating the stuff she watched online.

"Hmhm..." He huffed, and the cock before her flexed. She continued pumping him. Her fist twisting up and down. A 'schlik' sound reached her ears every time she did it. “You’re doing great, Noona. It feels really good.”

His breathing had become ragged, his eyes an intense shade of dilated purple. He slightly lifted the hem of the sheets to look at her better, to behold the degenerate sight of his older sister with his cock between her lips, her tongue swivelling and pirouetting all over him.

She wondered what went through his head as he stared at her. Her long tongue flattened against the underside of his mast. His bulbous tip resting on her forehead.

"Faster, Noona." Jae-il growled, teeth baring a dangerous, wild set of canines. Like her own pair. “Faster.”

She grinned at him.

His hand came to rest on her head, fingers digging grooves into her hair, almost untying her ponytail as his palm flatly held her in place.

And she didn't protest in the slightest. Just obediently obeyed, sucking, twisting her tongue, and bobbing her head up and down, back, and forth, in the most uncoordinated, lewd and sloppy, messy, obscene blowjob she could've ever imagined.

"God..." Jae-il breathed out. "Your mouth is hot..."

Mia held back the tiny little smirk and went further down on his shaft. His crown slid past the back of her tongue, briefly triggering an unexpected gag before her esophagus and jaw relaxed enough that she didn't puke all over his dick. She started stroking him at a more frantic rhythm. He flexed in her grip. She pushed her tongue down as she impaled herself on him.

He groaned. By then, her panties were already soaked. It was raining down there, seriously.

A soft whine reverberated from deep in her chest and his grip grew tighter, holding her steady so he could fuck the back of her mouth. She had no experience in giving head and if she were honest with herself she couldn't say this was the most pleasurable thing ever, but his ragged breaths and the sheer pleasure contorting his features were a sight that sent tingling, molten flames through her core. His hips jerked up with urgency, almost as if he were making a last-minute run and the goal was empty. Her throat protested with each brutal, spittle flying buck of his hips.

Yet, the more she found herself on the receiving end of such abuse, the more she grew to like the sensation of him losing absolute control within the tight confines of her mouth.

Ah...

'I'm so fucking horny... fuck my mouth real good, little bro...'

Her eyes were splayed wide open. A maniac grin would've split her features wide open if not for Jae-il jackhammering her mouth, relentlessly.

"Ghhkkk~♥"

"Gkghhh~♥"

"Aghhkk~♥"

The twitching of his manhood reached new heights and she instinctively tried to pull back, her brain panicking, but her brother wouldn't let her.

Mia knew what was about to happen. She thought she was prepared.

Nothing prepared a girl for what happens when an animal-like sound comes rumbling forth from her lover. Her brother.

His shaft lurched. Veins pulsed. He took hold of her hair.

It jutted, throbbed, and jerked as thick gouts of seed erupted right at the back of her throat. She froze as her nostrils were filled with his thick musky smell, she blinked, mouth widening for a second, almost coughing, choking on it.

Fighting back a second reflexive gag, she stayed and drank his seed.

Swallow it down.

Swallow it, don't spill—Mia repeated like a mantra.

She blinked off the tears in eyes. Jae-il cursed above her, groaning and wheezing, and, unable to keep her throat around him any longer without losing half his cum to a spittle or chokes, she pulled her head back, giving a firm suck on her way out.

Her lips audibly popped off his crown and with a sharp intake, she closed her lips, desperately attempting to keep everything in, everything his.

Then, as she struggled for air, a trickle spilled past her lips and dripped down his member to his balls. Her lips burned.

It didn't take long for her to begin wondering how in the hell was she expected to manage swallowing so much cum in the first place? She blinked again, tears welling up. A hand touched her cheek. She looked at Jae-il, who had sat up, holding her face.

With the other, he gently put his thumb on her swollen lips, keeping them shut and sealed. He gave her this damn, half-lidded, attractive smile, and she was just compelled to force the damn torrent down her stomach.

The column of her throat bobbed up and down, forcefully.

And her sore mouth was finally relieved

Of the constant pressure that had strained it.

She collapsed on him, sweat coating her back, tears prickling her eyes.

"I can't believe I've done this..." Mia mumbled against his chest. "I can't believe we've just fucking done this, holy fucking shit, we actually did this... we just had—"

"Mia Noona." The depth of his voice interrupted her train of thought as her name dropped out his lips in an almost whisper.

She felt, rather than saw him shift underneath her.

Jae-il pushed her. Forced her back down where he'd been moments ago. Her arms went above her head.

His cock was still standing, showing that a footballer’s stamina wasn’t limited to the field only. Its tip glimmered with leftover semen and no small amount of her own drool.

She grunted, flailed. Her bottom lip jutted a little. She had wanted to hug him after coming, no? Cuddle for a few moments. All the softness of a lovely post-coital period of affection.

She didn't get any of that, and a strangled whine pushed past her lips the moment her back thumped against the mattress. Her heart hammered, her cheeks reddening.

“W-What are you—”

“No, no.” A shake of his head. “You don’t get to speak. Not right now. So please, Noona, kindly shut the fuck up.”

“Huh…”

She blinked.

Jae-il loomed over her, his sweaty, enticing and slightly sticky naked chest directly before her. His bulky shoulders shifted, her own, narrower ones swallowed up by his biceps on either side.

Their gaze connected and her breathing paused. "Stay still, Noona." The corners of his lips went up. "I want to try something."