Scott whimpered as he nuzzled against Jackie's chest, panting heavily from panic. He was terrified that he'd befall the same fate as Mr. Rice, knowing just how vulnerable he was going to become. Jackie smiled sympathetically, stroking his hair in an attempt to calm him. She had removed her shirt, allowing them to be much more intimate as they lay on her bed.

Jackie had an innate feeling to protect the little guy. To look after him and keep him warm. Ever since their breakdown, that feeling had only grown stronger, and she knew it was only the beginning. He was going to get smaller and more reliant on her.

Those feelings, however, came with a more salacious underbelly. Alongside her affection towards Scott came an equally strong desire to make him submit to her. Not to hurt, but to dominate. To make him hers.

"Shhhh," she cooed in an attempt to calm her shaking stepbrother, "I know how scary it must be to see something so shocking, especially someone as big, old and scary as Principal Greenberg." Scott nestled himself further between Jackie's breasts, clenching his eyes shut and focusing on the thunderous booms of her heartbeat. Jackie continued, her words reverberating through her chest, "Everyone's scared of what they don't know. All of this is so new to you. But, hey, it's new to me too!"

Jackie placed a finger under Scott's chin and lifted his face towards hers. With some reluctance, Scott opened his eyes and met his huge stepsister's gaze. "Say, how about you and I have a fun day inside? Hmm?" she suggested.

"Are… are you gonna make me sm-smaller?" Scott stuttered back, sniffling as he regained his composure.

"Eventually, yes, of course." Jackie replied, "But not today… Unless ya want me to!" She winked, getting little else back than pleading eyes. "Oh stop, I'm just messing with you, little bro!" she assured Scott, "I promise I'll be good. We'll veg out, eat snacks, watch whatever you want."

"Really?"

"Of course!"

Scott felt his whole body relax. They were going to have a totally normal, lazy day. "I love you, Jackie!" he chirped as he wrapped his arms around her expansive chest. Jackie felt her heart pound from Scott's sudden embrace. Yeah, he was her stepbrother, and she'd grown up with him. Hell, a little over a week ago, she hated his guts. But after everything they went through, everything she put him through, he was still here, with her. He was nothing short of a teddy bear that hugged and said he loved her. And all because she decided to play hooky with him and veg out?

Jackie knew that Scott was hers at that moment. Her heart was full, thrilled to see him finally making progress towards accepting their new dynamic. There'd be bumps ahead, and things would change for sure. But what mattered most was that they loved each other. It was weird; she knew that much, him being her stepbrother' n all. Who cared? They weren't blood-related, but their bond ran deep nonetheless.

"Awww, Scotty. I love you too!" Jackie replied as she embraced Scott against her soft chest. She brushed the hair from his eyes. There was a brief pause while their eyes locked together. Soon Jackie's plump lips met Scott's, engulfing much of his face in her passionate kiss.

After finally parting, Jackie slipped her hands beneath Scott's arms and lifted him from atop her chest. She sat up, placing him comfortably on the bed beside her, "C'mon, we got a day of binging to do. Marvel, Star Wars, or Lord of the Roads marathon?"

"Ummm, you choose," Scott replied, indifferent about what they watched. He was just excited to have a day of relative normality. There'd be no sex, no shrinking and certainly no pain. He adored this side of Jackie and could feel himself yearning even more for her love and attention.

"It's your day, silly!" Jackie countered in a climb to her feet. Scott was stunned by Jackie's ass bouncing in his face. He could feel the burning in his loins, blood rushing to his cock. Jackie turned to face him, arms held high above her naked body in a much-needed stretch.

Scott pinned his hardening shaft between his legs, desperately trying to keep Jackie from seeing. Yet he couldn't stop staring at her, mouth agape at the sight of her young, perky tits. Jackie watched his eyes, distracted and a little lower than they should've been. "Well? See something else you like?" she asked with a teasing smirk.

Breaking him from his trance, Jackie watched Scott's eyes shoot back to hers. He kept her gaze, praying that she'd not notice his erection and change their agenda. "S-sorry! I ermmmm… I like all those m-movies," he replied anxiously, hoping that engaging her would be enough to keep her attention from his sandwiched thighs.

Jackie smirked, "Okay, Marvel it is. Let's do the cap movies; he's my fave!"

*******************************************

"Wow, I can't believe we managed to get through all three!" Jackie said, the pair of them still lounging on the couch. She wrapped her arm cosily around Scott. He sighed, content in the warmth of being held against her stomach and feeling ready for a nap.

Jackie inadvertently pushed Scott into the sofa as she leaned over to the coffee table. Reaching into their plethora of snacks, she took a handful of popcorn before stuffing it into her gaping maw. Scott squirmed beneath her, only returning to his position against her once the immense pressure relented.

After three movies with Jackie constantly snacking, he was used to her lazy attempts to get past him. "Yeah, the last one's my favourite, especially with the new Spider-Man," he said nonchalantly as if it hadn't even happened.

"He's great," Jackie replied, her words muffled by the mass of chewed popcorn. Specks of the crunchy treat sprayed messily from her mouth with each powerful crunch, narrowly missing Scott below as she continued, "But Tobes and Garfield are tough acts to follow."

Still chewing, Jackie placed her hand onto Scott's shoulder. She tugged at it, prompting him to turn his body and lay towards her. Jackie smiled lovingly at her shrunken brother then swallowed her food. Now properly satiated, she ran her fingers through his hair and began making out with him once more.

Scott was overwhelmed by her desire, so much so that he couldn't resist kissing her back. As they pulled away, sharing an intimate gaze, he asked, "Jackie, is this not wrong? Y'know, you and I… stepsiblings?"

"It's different, that's for sure," Jackie shrugged, "But it doesn't feel wrong!" She pulled him into another deep kiss before adding, "I mean, I still get the urge to tease you… And God, our size difference is such a power trip!" She moaned, tipping her head back in playful frustration. "But you're adorable. I guess I always kinda thought so. I just couldn't get past all your annoying antics."

Scott nervously laughed as he scratched his head, "Yeah, sorry about that. I sorta feel the same way, only different."

Jackie looked back at him quizzically, "What do you mean?"

Jackie's eyes pierced into Scott, causing him to shudder in worry. Choosing his words carefully, Scott admitted, "I dunno, I guess I've always felt a little inferior around you. With the way we've been, it's just been something I've never admitted, even to myself." His cheeks glowing with embarrassment, he opened up even more, "I think deep down, I kinda liked it... I just had to suppress all that to save face." Scott paused for a moment, retrospectively adding, "Not when you hurt or yell at me, though! You can be really scary sometimes, and I can't take it like I used to. I know we said we wouldn't talk about it, but I hurt from last week. I still have nightmares."

Tears built up in Jackie's eyes as she held back the urge to cry, expressing her guilt in a tight, almost painful hug. "I know I don't..." she began, struggling to keep her composure, "Deserve your forgiveness, Scott, but I'm gonna make it right. I'm sorry!"

Scott pressed his head into her chest affectionately, unable to move the rest of his body from her overbearing clench. "It's okay, Jackie, don't cry. Just promise that you'll be there for me, no matter how small I get. I need you."

"I promise," Jackie sniffled, "Nobody will ever lay a finger on my little guy, or there'll be hell to pay."

My little guy. Scott couldn't help but hear those words over and over in his head. "So... err... what does this all make us? Like, are you just still my stepsister? Are you my girlfriend?" His heart thundered in his chest, unsure of where finally addressing the elephant in the room would lead them.

Jackie's eyes widened at how direct Scott was. She hadn't expected it from his smaller, more timid self. She relished in being able to answer his question, "Yeah, I'm your stepsister, AND I'm your girlfriend." She hugged him tighter, teasingly asking, "Got a problem with that?"

"No, no, of course not." Scott stuttered, unable to take her jokes. He was still on high alert, treading on eggshells to avoid a beating. Scott trusted that Jackie wouldn't hurt him anymore, at least not a lot. It was just a lingering symptom of what he'd been through. His mind flashed back to her kicks and punches, his wheezing and crying on the floor. It was all in the past now; he was more than ready to look forward.

Jackie traced circles across Scott's naked body in an attempt to ease his nerves. "Relax, I'm just teasing," she said softly, "But I hope you know what you're getting yourself into; being my boyfriend is no easy task. I can be quite needy, and at times, I'm super clingy! You'll never get away from me."

"Really?" Scott laughed, pushing his body against the arms coiled around him, "I couldn't tell!" He didn't mind being held so tight, loved so dearly; getting smaller each day was a scary way to live. He appreciated feeling so safe and began to question whether or not her dominating him was worth all of that.

Jackie chuckled as she gave Scott a noogie, invading his vulnerable, shrunken body with her prying fingers. "Hahaha, stop it! I'm ticklish!" Scott begged playfully, involuntarily laughing all the while. As things calmed, he asked, "So what about Mom?"

"What about her?" Jackie replied, having some of her own concerns but curious to hear Scott's. Her mom would likely have a set plan to come home soon, and she'd have to try and adapt to her and Scott's new lifestyle, their new relationship. It was undoubtedly going to have its bumps, but Jackie was confident they'd figure it out. She had a responsibility to handle that for both her and Scott. It would prove to him that he was in reliable hands. And what good was he now other than for her personal use?

"Well, won't she think this is weird?" Scott suggested, feeling nervous about the inevitable return of their mother, "We are stepsiblings, after all." At one point, he had been desperate to have his stepmom back, but the reality seemed far more worrying now that he and Jackie had buried the hatchet. Every day he needed Jackie a little more, and her mom was someone that wouldn't understand what they had.

"Maybe..." Jackie said, "But it couldn't be any weirder than you shrinking. All I know is that I'm not gonna let anyone stand between us. Nobody. Not even Mom." Those were impassioned words. All of this was uncharted territory for them both. Scott couldn't believe how intense things had become. It was a little frightening.

"Jackie?" he asked quietly.

"Yes?"

"Do you promise you won't do to me what Principal Greenberg did to Mr. Rice?"

Jackie looked at her stepbrother with pity in her eyes, taking a long pause as she searched for the right words. "I can't promise you that, Scott." she admitted, "I get these... these urges, and I can't stop thinking about how hot it'd be to use you like that."

"B-but..." Scott said back as his heart began to race, panic overcoming him, "Don't I get a say in all this?" He desperately didn't want to end up like Mr. Rice. He could think of few things worse than being sat and used like that or shoved up... there. The only saving grace was that his sister was beautiful, but he wondered if he'd ever notice a significant difference when shoved up to his ankles inside of her.

"For some things, of course. But not everything." Jackie explained, "Whether you're willing to admit it or not, we're not equals in all this." She took another pause, "Look, Scott, I adore you. But it just doesn't make sense to have you on the same level as me. I'm six feet tall, more powerful than you in every way. You're already so small and fragile now, but what about when you're six inches? Or smaller!?"

"But I'm... I'm still a person," Scott countered. He knew there was very little he could do to stop her; he just wished she'd let him live freely. He did love Jackie; having her protect and control him certainly felt freeing. But what Prinicipal Greenberg did? That was beyond too far.

Jackie smiled at her naive stepbrother, "Yes, but you're MY person. You've gotta think about this logically. I can promise you safety, warmth, my love, and so many other things. But you need to contribute too, and there's only so many ways you can pitch in." Jackie could feel herself getting a little flustered as she thought about Scott's contributions to their little arrangement, tracing a finger down his bare side, "Trust me though, that very way will be MORE than enough."

"So, you're just gonna... use me?" he asked timidly, hoping to appeal to her empathetic side. It was a long shot, but she'd promised not to hurt him, and from what he could tell, Prinicipal Greenberg had put Mr. Rice through hell.

"Yep. I'm sorry, bro. I can't get it out of my head," Jackie replied. Scott appreciated her honesty, but the reality terrified him. She pressed on, "The thought of using you like that, how good it'll feel when I can finally plunge your whole body in and out of me. I don't think I'll be able to get enough!" Jackie allowed her hand to slip from Scott's sides, falling between her legs as she tenderly stroked her labia.

Scott could feel the tears building as he struggled not to break down. "Calm down, short stuff. It's me, remember?" Jackie assured him, wiping the slight moisture from her hand onto his side before embracing him, "I would never do ANYTHING to hurt you. Not anymore, I promise. I may get a tad rough here or there if the mood strikes." She winked at him, hoping to ease his nerves a bit. Scott had given up arguing with her; there was no point. He still loved her, but she scared him sometimes, and things were only going to escalate.

"Can... Can I at least kiss you?" Scott asked, his voice weak and despairing. He paid no mind to the juices drying onto his side, hoping that she hadn't worked herself up too much.

"No!" Jackie asserted sharply, causing Scott's face to drop. The tiniest bit of light he'd held onto was quickly fading away. He stared up at Jackie, scanning for any indicator that she was joking or that he'd misunderstood. Nothing.

"Not if I kiss you first!" Jackie said playfully, her plain expression quickly changing as she pulled Scott into her. She laid her immense body across his, pinning him to the sofa beneath her and kissing him deeply. The two of them made out as Jackie began dry humping him, her massive crotch grinding against his shrunken form as if it had a mind of its own.

Jackie pulled away, her enormous breasts dangling teasingly over Scott's face. Her silky, dark areolas brushed against him, tickling his skin as he sat up to kiss them. Jackie cooed in response as she shut her eyes blissfully. Scott felt a soft kiss planted upon his neck as he worshipped her breasts, overcome with relief from her warmth and affection. The pair let out contented sighs, soon drifting off to sleep in each other's arms.

*******************************************

Jackie's phone buzzed noisily against the wooden coffee table, stirring her from her slumber. Laying across her stomach, she lazily plucked it up. She scanned the screen for notifications, a mighty yawn overcoming her as she did.

Squinting hazily as she noticed a message from Vicky, Jackie wondered where Scott had gotten off to, only to feel him beneath her. She lifted herself off of her sleeping brother, leaving him glistening in boob sweat. Scott's head was coated in Jackie's drool, most of his upper body still encapsulated between the thick breasts now dangling above.

Jackie opened Vicky's text, tired and still squinting, "Are you seeing this?? Turn the news on now!" Then, sitting up more urgently, Jackie climbed off Scott's sleeping body and nudged him awake.

Scott groaned quietly as his eyes flickered open, "Hey, w-what's up?" Looking over to Jackie, he noticed she seemed fixated on the TV. She grasped the remote and flicked it over to the news.

An army of reporters surrounded a single podium as President Hope gave a speech. "After extensive research, and collaboration efforts across the globe, we can confirm now that the Y-Strain virus is both airborne and waterborne," she explained, shuffling through her notes, "We can also confirm that it only affects men."

Jackie and Scott stared at the screen, mouths agape as President Hope continued, "I have spoken in length with the experts, and they are forecasting that by month's end, all men worldwide will be infected. We can also confirm with certainty that orgasm does accelerate the process, as many have come to suspect."

"It's about damn time!" Jackie exclaimed, grinning at a stony-faced Scott. He just watched the screen and listened, eager to hear any positive news in the otherwise terrifying broadcast.

President Hope cleared her throat, "It's time to embrace change. Unfortunately, we have made no progress on curing this virus and believe no further progress will be made. However, what we do know is that our men need us now more than ever. For that reason, I've removed the current ban on air travel, and congress has passed the Y-Strain Protection Act."

A collective gasp echoed through the room, mirrored by the stepsiblings perched on the edge of their sofa. Scott looked over to Jackie for a moment, unsurprised to see how unphased she seemed. Each word that President Hope spoke seemed to only further cement his diminutive future. No matter how much better his relationship with Jackie became, he still just wanted to live a life of normality, and that seemed a pipe dream now.

"This act will ensure our great nation can continue to thrive," President Hope explained, "We have already lost so much in the fight against Y-Strain. We are ready to tackle our new future and will do so by addressing the elephant in the room - how will we handle half the world's population dwindling to what we suspect is a minimum of three or four inches."

Scott and Jackie turned to each other, experiencing very different emotions as they processed President Hope's speech. "Three inches?" Jackie asked whilst beaming ear to ear. Scott sulked, concerned at how excited she was, his heart pounding in his chest as he thought back to Principal Greenberg's video. Jackie wanted to emulate much of that with him. But, of course, she'd have no problem forcing him into it when he was three inches tall. Hell, he'd possibly even be a little on the too-small side.

President Hope continued, "Though still human, men will be given a special status, similar to that of an endangered species. Cruelty will be dealt with to the fullest extent of the law. With the currently understood, though subject to more studies, minimum height, people with the Y-Strain virus will be entirely dependent on those around them." She paused for a moment and took a sip from her drink, "They will also be more accident-prone. This new status will ensure that these accidents will be infrequent, as they will require a guardian."

Licking her finger, President Hope peeled away the current page from her notes, referring to another as she tucked the previous beneath it. "If any of those infected cannot afford nor find a willing guardian, he will be cared for at one of the thousands of newly established processing centres. They are being erected as we speak and will serve as a home until we match him with a suitable guardian." President Hope revealed, "Yes, I know this may sound costly, but these centres are estimated to save us trillions of dollars by accelerating the diminishment process. Men at three inches in height will take up far fewer resources. We will also include guardianship matchmaking services within communities to help revitalise the economy and find homes for many estranged men."

"Lastly, to reach production demands, we will be providing tax incentives to businesses and startups who support our shrunken male demographic." President Hope declared, "Clothing, food, living arrangements, communication devices, carer services. You name it. They may be smaller and more vulnerable, but these are our husbands, sons, fathers, brothers. They're the same people they've always been. These are challenging times ahead, but as mom always said, what doesn't kill you only makes you stronger. We are a nation of proud, strong women, and our men need us. Let's not let them down."

Jackie turned the TV off. Both she and Scott in utter shock for very different reasons. Jackie was stunned as she turned to Scott, her focus taken from him suddenly as her phone vibrated. Lifting it from the table, she noticed it was her mom before quickly holding the device to her ear. She answered, "Hey Mom, yeah, we just saw the speech too."

Scott watched Jackie, listening intently for his stepmom on the other end as Jackie spoke, "The earliest you can get back is Saturday? Jeez, the last ticket... That sounds expensive." She glanced towards Scott, a slight unease in the air at the thought of their mom returning. "Are you sure you don't wanna save and get a later flight?" Jackie asked, hoping to postpone the inevitable drama that would accompany her mom's return, "Okay, okay. Yeah, I'm sorry we haven't spoken more often. I've just been taking care of little bro here... Oh Scott..."

Scott's ears pricked up. He couldn't quite make out what his stepmom had been saying, her voice little more than a high pitched buzz. "Hey! Can I speak to Mom?" he hesitantly proposed, receiving nothing more than an agitated glare and shushing finger from his overpowering sister. He sank back into the sofa a little, pouting but not wanting to push his luck.

"Sorry, it's just a habit to call him that. He's just so small now..." Jackie explained, "Oh, sorry, yeah, he's like a little under two feet? Yeah it has been super scary for him. Not gonna lie, Mom, we've had our fair share of disagreements." Jackie smiled at Scott, "But we've had a heart-to-heart, and I've been really good with him, haven't I, bro?"

Scott sat up, excited to be able to answer. As he opened his mouth, about to call up to his stepmom, Jackie shot him another glare. She reached over like a distracted parent, placing her enormous hand across his chest and pushing him back down. He stayed there, not daring to speak out again.

Jackie continued without his input, "We're so close now; you won't recognise us... Yes, really! He practically has to force me not to cuddle him. I won't let anything happen to him, I promise... Yeah, love you, Mom. See you tomorrow."