Brother-sister bonding while the parents escape

...Only to come face-to-face with her brother.

Emily froze, only moving her eyes as they slowly panned down Jimmy's naked body. He was a couple inches shorter than her and more lanky than fit, so his frame shouldn't have been imposing... But it was the little things that struck her, and made her act like a deer in headlights.

The sweat glistening on his skin. The exaggerated heaving of his chest. The way his glazed-over eyes locked onto her breasts. The foot-long cock swinging between his legs, dripping with--

--Well, that last one wasn't such a "little thing."

Before she could say a word, Jimmy stepped forward and grabbed her shirt with both hands. Ripping it off with a single tug, he exposed his sister's perky tits. After kneading and squeezing for a moment, he used them as handles to push his sister to her knees.

"J-Jimmy, I--GUUUGH! MMGH!"

Panting and growling, the ****-up Alpha began to **** his meat into Emily's mouth. As her lips were stretched open his own parted as well, and a slow trickle of drool began falling onto his sister's exposed breasts. That, along with the spit leaking from around his shaft, began to lube up his next conquest. Soon Jimmy was lying her back on the bathroom floor--Gentler than Emily expected, though that wasn't saying much--And preparing to titfuck her.

In the next room, Francis and Audrey listened in awkward silence as their son's cock squelch, squelch, squelch-ed between their daughter's breasts. Jimmy's growls were soon joined by Emily's confused-yet-happy moans: there was pheromone-enhanced pre-cum spurting from his thrusting member, after all, and it was positioned just below her nose and mouth.

Francis glanced over at his wife, aghast--Only to catch her as she slipped a hand between her legs. Within seconds, she was sliding two fingers into her pussy... And when they came out glistening with her son's loads, she couldn't help but have a taste.

"Jesus, Audrey," Francis murmured, even as his cock sprang up yet again. "We... We should go. Get out of here for a while."

"Mmm... Huh?"

"We, uh... We need food, and supplies, and..." He cleared his throat. And to get out of this haze so we can think straight, said the part of his mind that was still resisting the ****. "We have to provide for our family, and--Well, Jimmy doesn't need you right now."

Nodding, Audrey reluctantly slid off the bed. She made a few shaky steps toward the door before Francis stopped her.

"Clothing first, dear... Come on, follow me."

"C-c'mon... Cum on m-me," Emily murmured, as her mortified embarrassment began to lose its ongoing battle against her skyrocketing libido. "Jimmy... I... I w-want your cum," she repeated, slightly louder.

With a final grunt, her brother began coating her face in rope after rope of warm, thick seed. Soon her delicate features were entirely plastered-over, along with most of her rack and half of the bathroom floor.

"Guh... Fuck..." Jimmy rolled off of her, leaning against the edge of the bath for support. After taking a minute to recover, he crawled over the side and into the tub. "Uuungh... I..." His eyes began to come into focus, and he glanced down at his cum-coated sister. "Emily... Wash us?"

Wiping the jizz from her eyes (and resisting the urge to shovel it into her mouth), his sister nodded. Maybe it was exhaustion, or the effects of the ****-enhanced semen, but as she looked at her brother she felt... Affection.

Despite his insane power trip (and general obnoxiousness), she was still his brother--And he just looked so spent. He needed someone to care for him, and she wasn't about to refuse.

With a deep sigh, she wiped more of his seed from her face before pulling off her panties and climbing into the tub. "Um... Bath or shower? No, wait, definitely shower--Don't wanna end up in jizz soup, right?"

"Th-thanks, Sis," Jimmy replied, lying back against the tub. "...You're the best..."

"Don't mention it." As Emily started the shower, aiming it away from her brother until the water warmed up, her mind was busy trying to justify the warm way she was acting towards Jimmy--For the first time in their life, even. I'm just doing this so he'll treat me better, right? Yeah, that makes sense. Gotta survive this somehow.

Fetching a cloth and a bar of soap, she began washing her little brother. Wow, he's actually... Handsome? Like, REALLY handsome... I never noticed... Jesus, what's wrong with me?