RE: Keep it in the Family (Secret Class)

Su Ah's POV:

Her words were nearly lost to a peal of thunder that crashed over them. But she felt his reaction all the same, his cock lurching.

It sent a thrill through her.

She ducked her head down into the covers. But her embarrassment lasted no longer than three seconds.

There was no other sound, no other motion. Jae-il remained silent. Su Ah began to shake uncontrollably. And she could feel the subtle shift in his posture. "Are you sure, Noona?"

Su Ah closed her eyes. Was she sure? Gods, she hadn't been more certain of anything since the sky was blue and the grass was green.

Her mind, traitorous as it could be, flashed to Mia's face. What would her Unnie think? She pictured the fierce look her sister would get—part judgment, part jealousy—if she found out how far Su Ah was willing to go to get Jae-il's heart and body.

Ah, but she already knew. Mia was aware of everything going on behind her back.

Back home she certainly knew the reason why Su Ah all but dragged Jae-il into her room.

And so she found herself thinking of Mia; what would have she done, were her in Su Ah's place right now? Not that her Unnie was a virgin anymore. She was sure Mia had done it once with Jae-il. One too many times, perhaps.

Mia Unnie would have owned it.

Taunted him even.

Probably would have flipped over without a moment of hesitation and dragged Jae-il on top of her the very first time their clothes came off, laughing about how taboo and exciting it was.

Mia would have used this moment as a weapon, as further cement of Jae-il belonging to her and nobody else.

But Su Ah? She closed her eyes not out of shame but because she wanted it too much.

She wondered when exactly this had become inevitable—this freefall they were both taking together—not even the first time she'd felt her heart skip when he looked at her, not even when she began fantasizing all the ways he'd take her.

No, this had always been coming.

And in this fall, it was Su Ah who had grabbed his hand while taking that plunge.

Was Mia more sensible for seizing what she wanted, or was Su Ah worse for overthinking yet giving in anyway?

"I'm sure." Her voice was steady now, stripped of all doubt as she finally looked him in the eyes. "More sure than I've been about anything."

It was as much as a surprise to hear those words come from her lips as they were to be spoken. Su Ah waited, watched for any signs of rejection on his handsome face. But Jae-il simply remained still and watchful, waiting patiently until the very end.

She loved him.

Su Ah truly, genuinely loved him. It was ridiculous how fast this had been, yet not ridiculous in the slightest to understand her feelings for him.

"So be with me tonight, please."

There, it was out now. No turning back. No regrets, even.

She simply couldn't imagine a situation where it's not him, here, next to her.

"......"

Jae-il probably had a nice little speech in the back of his head, one he'd likely recited to Mia the first time they'd gotten into a moment like this one. And every moment afterwards. She was sure that this responsible little brother of hers would want to explain himself, and probably set boundaries, discuss ground rules, talk about the consequences, the complications and the things they needed to prepare for...

There would be no speeches this time.

Not this night, because the very moment Su Ah gave permission, she found herself being suddenly rolled and moved, a heavy mass of naked boy crushing the breath out of her as he positioned himself above her.

The sleeping bag wasn't made for two people, and neither of them were exactly a small duo to pile in a confined space.

"Is this something... you... you want too, Jae-il? Be honest..." Su Ah said between soft, tickling bites along her lower lip. He was driving her crazy. Her entire face was surely crimson.

Not that she'd have gotten out of the sleeping bag and re-clothed herself if Jae-il wasn't as willing as she was, but she still craved confirmation.

"I know what I'm feeling right now. This, with you. I want it too, Noona." He said, looking at her intensely, but without judgement, without blame. And she appreciated it beyond words. "The rest, we can figure it out as we go. One day at a time. No expectations, no pressure. No obligations, just us, however we want. We'll see and decide, and we'll just... be. However we decide to."

And before Su Ah had the chance to voice her agreement, he'd planted a kiss on her lips. Soft. But not chaste. Not the shy kiss of two inexperienced first-time partners.

He'd cupped her breasts, thumbs playing with her nipples.

She gasped, and he seized the opportunity to nip at her tongue, sucking, lapping at each other. Su Ah allowed it to slip further in until her brother broke off the kiss and licked and nibbled his way along her throat.

Then, as he caught a nipple between his teeth, a leg pushed against hers and nudged her to part them.

"Gently..." She reminded him, her cheeks hot.

He nodded, raising his head to look at her with the most serious, attentive expression.

"Gently." He repeated, but his hands trailed the insides of her thighs, grazing, sliding, fingers circling.

Su Ah had wondered whether this would change everything between them. Her relationship with Mia, with Jae-il, with her family, herself.

It would, for sure.

What she didn't know yet was how far down this path this thing would take them, not even beginning to imagine what future encounters—what consequences this first act—would set in motion.

The comet above had been blotted out by storm clouds above the mountain.

Soon it would pass, its brilliance perhaps now forever less illuminating than its passage had promised. But until it crossed the skies over this side of Earth, until the moment it'd disappear over the horizon, Su Ah wouldn't be seeing it. Not once, not ever again, maybe, after tonight.

Just like her innocence. Just like her first time.

One day, she'd probably regret and maybe even grow to resent her own naive and over-emotional self.

But for now? This breath before the plunge, this pause before the inevitable fall, was everything.

Su Ah's eyes fluttered when she felt a hot and swollen tip aligning itself between her folds. That delicious slide that left a trail of pre-cum.

She lifted her hands to cradle Jae-il's face, bringing his gaze to meet hers. "Jae-il...?" She blinked blearily. "Look at me when you do this. I want to see you..."

Then her eyelids drooped into this lazy, nearly sleepy half-lidded state, her mouth parting ever so slowly as Jae-il's cock breached her, sliding along her slickness as he sank deeper. She gave a shuddering, open-mouthed gasp.

Su Ah tilted her chin up and arched her chest toward her brother, her stomach hollowing out. Jae-il could have said a million words. He might as well have had, for all she understood the low, guttural noise that tore from him.

The stretch burned as he entered her. A flimsy barrier briefly stopped his penetration and snapped quickly with one steady push forward, no more substantial than the torn wrapper from a condom.

A sharp bite of tissue tearing sent stars bursting behind her eyelids.

Perhaps that flimsy little obstruction hadn't made such a big difference for Jae-il, judging by the pleasure and growing concern evident on his face. Su Ah watched him swallow, his throat moving under a sheen of sweat, the corded lines in his neck going taut, the dark hair at his temples clinging there.

But Su Ah felt it clearly enough.

A flash of pain as that tiny little something went away forever. Her expression scrunched up, teeth grinding, tears welling up in her eyes.

She gasped and her body trembled but she held his gaze, watching his pupils swallow the beautiful purple of his irises as he sank deeper into her heat.

Her channel resisted as inches disappeared inside—tight walls fighting the intrusion, then reluctantly surrendering. She cried out softly when he bottomed out, their hips pressing flush against each other.

She dimly recognized the dampness pooling beneath them wasn't just her arousal.

Blood. Her proof. Her first giving, not take, but openly given. This scarlet sacrifice would change everything.

Jae-il stayed perfectly still, breathing raggedly through parted lips as he hovered over her. He kissed the trail of tears she hadn't realized were streaming down her temples.

"Should I stop, Noona?"

Su Ah tried to respond, found her throat too tight, and managed only a head shake. As she regained control over her limbs, she locked her ankles behind his thighs.

"No." Her response came strained, honest. Don't ever stop.

He began moving. At first, just subtle shifts that tested her tight passage.

Then, Jae-il's hips eased down, his erect member disappearing inch by inch inside his older sister's womanhood, until he could sink no further, balls deep in that sweet, molten silk.

God. Oh, Gods. That stretch and delicious fullness within her was positively addicting.

"Ohhh...."

"Ohhh....!!"

They both gasped into each other's mouth, ventilating the same breath in a hot cycle.

Su Ah's heart was racing. She clung to him tightly, hands finding purchase at the nape of his neck and twisting the hair there, then, as Jae-il set the tempo, her hands slipped down to his back, nails biting down hard enough to nearly scoop out his skin.

The pain dissolved rapidly, transmuting into thick pleasure that wound through her and suffused into her flesh, reaching every fingertip and every toe.

Su Ah tilted her hips, lifting her pelvis, instinctively trying to achieve maximum friction with each in and out movement.

This was nothing like masturbation.

“Ohh, God…” Su Ah mewled. “Oh Jae-il, yes~”