Work Text:
If Alex had learned one thing about Kara in the thirteen years since she crash-landed on earth and became part of the Danvers family, it was that Kara hated having her wings touched. She took immaculate care of them herself, of course—even if she had to keep them hidden when she wasn’t Supergirl with technology that Clark had gifted her when she arrived on earth—a Kryptonian’s wings were their pride and joy, and Alex supposed that must be part of the reason why she didn’t want any human touching them.
Not that Alex hadn’t thought about it. From the very first time she’d set eyes on Kara with her wings spread, every reddish-brown feather on display, she’d ached to reach out and brush her fingertips along those downy-soft feathers. She’d thought about Kara’s muscular shoulders, where skin turned to feather, about dipping her fingers into every crevice. On the rare occasion that Kara flew her somewhere, she’d cling to her midsection, transfixed by the powerful beating of those huge, beautiful wings (and later, on those nights, Alex would remember every detail of them as she slipped a hand between her legs, whispering Kara’s name). But Alex knew, she knew Kara would never anyone touch them. Not even Alex.
So you could imagine Alex’s surprise when adding alcohol to the equation that was Kara Danvers seemed to change her mind about that particular thing.
She’d found her, giggling to herself alone in one of the booths at Al’s, and offered to drive her home, since she was in no state to fly. Alex had never seen Kara so… loose, before, and it sent a little thrill up her spine. She shoved down the feeling, though, as she drove Kara back to her apartment, reminding herself that it was her job as Kara’s older sister to take care of her. Not to prey on her.
Kara flipped through the radio stations rapidly as Alex drove. Her wings were hidden with a gadget that nested between Kara’s shoulder blades, projected an illusion over them to hide them from view, so that Kara’s identity as Supergirl could remain a secret.
“I should ask Winn to make me a radio I can carry around when I fly,” Kara said, as if it was a brilliantly revelatory concept. Alex glanced at her, raising an eyebrow.
“You mean like a phone?” she asked, and Kara’s eyebrows shot up.
“You’re really smart, Alex,” she said, looking over at Alex and pressing her cheek into the car’s headrest. Fuck, she’s cute. Alex’s heart skipped a beat when she saw the way Kara was looking at her, and she felt heat creep up her cheeks.
She’s drunk. She doesn’t really like you that way. You’re seeing things.
Alex swallowed thickly, trying to tamp down the emotions beginning to swirl in her head. Pull yourself together. You need to take care of her.
After what felt like an eternity to Alex, Kara’s eyes fixed on her profile as she drove, they rounded a corner and approached Kara’s apartment. Thank god for little miracles, Alex thought, as she found a parking spot within a block of the building. Alex got out of the car, started to walk towards the apartment, then realized that Kara wasn’t following. She turned back and circled around the car, opening the door for Kara and offering her a hand. Kara giggled before taking it.
“So polite,” she teased. “M’lady.”
Alex made a face as she helped Kara out of the car.
“Don’t call me that. It makes me feel old,” she complained. Kara squeezed her hand.
“You are old… my older sister, practically an old hag!” Kara joked. Alex forced a laugh, but Kara’s words were a bitter reminder of what she was to the other woman. Just a sister, despite the fact that Alex craved so much more.
Alex had to help Kara up the stairs, and she felt herself blushing at how much of Kara’s body was touching her own. It reminded her of flying with Kara, being pressed up against that solid yet soft body, wrapped up tightly in strong arms to keep her from falling. Alex wanted that closeness all the time. She tried to burn the feeling of supporting Kara, of helping her, into her mind.
Far too soon, they made it to Kara’s door and Alex helped her with the key. As soon as they were inside and the door was closed behind them, Kara reached behind her and detached the little metal disk from between her shoulders, and her wings flickered into view. She threw the disk on the counter and stretched. Alex watched, enamored, as Kara raised her hands up and extended her wings to their full wingspan, a good twelve feet of gorgeous, rippling red and brown. Kara seemed to notice Alex staring, and, to Alex’s horror, winked at her.
You’re reading too far into it. She doesn’t mean it.
As Alex’s thoughts raced, Kara finished stretching and padded over to the couch, plopping herself down in the center of it with her wings draped over the sides. Alex followed her at a distance, hovering in front of the couch awkwardly, until Kara gestured at her to join her. Alex gaped at her.
“But… but your wings—” Alex started to protest, but Kara extended a wing and pulled Alex in towards her, forcing her to stumble onto the couch. Every inch of Alex’s body felt like it had been set on fire, the instant Kara’s wing touched her. Even through a layer of clothes, Kara had let her touch her wing.
Alex was stiff as a rod as she sat on the couch, feeling as if she could somehow feel the feathers of Kara’s wing behind her through her shirt. She was too afraid to move, afraid that Kara would change her mind. Kara seemed to pick up on Alex’s hesitation, and her brow furrowed, looking let down.
“Thanks for taking me home,” she said abruptly. “You don’t have to stay.”
Alex opened her mouth, trying to formulate a response that wouldn’t completely humiliate herself, but before she could speak, Kara’s head shot up, having detected the distant sound of a siren.
“I need to go help,” she began, but when she tried to jump to her feet, she missed her footing, flapping her wings in alarm and knocking a mug off of the table next to the couch. It shattered when it hit the floor, day-old coffee soaking into the wood floor. Kara stumbled away from the sound, looking guilty.
“Kara!” Alex said sharply, but then she caught sight of the look on Kara’s face and her tone softened. “Hey, it’s okay. I’ll clean this up, but you’re not helping anyone like this. And I’m not leaving. Sit back down.”
Kara looked dejected, biting her lip and curling up on the couch again with her legs tucked under her and her wings folded up.
“Sorry…” she said softly as she watched Alex cross the room to grab paper towels and a broom. Alex shot her a smile as she returned, hoping she’d be able to get her sister back into good spirits. Though, even if all Kara wanted to do was drunkenly cry on Alex’s shoulder, she could handle that. She’d had her fair share of those nights, herself, though Alex had usually been crying alone. She’d do anything to make sure the same wasn’t true for Kara.
Kara was pouting.
“I hate this. I don’t like not being able to do what I’m supposed to do,” Kara complained. Suddenly, her face brightened. “Hey, what if you drive me there?”
Alex gave Kara a stern look, trying to ignore the way Kara’s pout tugged at her heart.
“Kara, you’re still drunk. I’m not putting you into a potentially life threatening situation when you’re like this.”
Alex finished cleaning up the shards of the mug and dumped them in the trash, then walked over to the couch to sit down next to Kara.
“Just try to enjoy this, okay? Let yourself relax. You have no obligations for a little while,” Alex said, taking one of Kara’s hands in hers. She hesitated, then added, “All that matters right now is that you’re here with me. What can I do to help you relax?”
Alex cringed internally as soon as the words slipped out. Way to make it obvious that you want to fuck her, she thought harshly. But Kara was biting her lip and blinking up at Alex through brown lashes and she almost didn’t regret saying it. Almost.
“Actually…” Kara said hesitantly. “There is something.”
Alex’s heart sped up. She’s not about to ask you to fuck her, dumbass. She hoped that Kara was too out of it to pick up on her irregular heartbeat with her super-hearing.
Kara, sweet Kara, oblivious Kara, stood up again, slower this time, and headed towards her bedroom. Alex trailed after her, apprehension slowing her stride. What was Kara about to ask her to do?
Kara reached her bed and flopped down onto it, belly first. She kicked her shoes off onto the floor and then stretched all her limbs again. Her wings covered nearly all of the bed.
“C’mere,” she said, looking sideways at Alex, who was still lingering in the entrance to the room. Alex obeyed, despite the apprehension churning in her gut. She reached the side of the bed and Kara tugged on her wrist, looking at her expectantly, like Alex should know what to do next.
“What is it?” Alex asked. “What do you need?”
She cringed at her own words again. What is this, a porno? Kara didn’t seem phased, though; she just tugged again, harder, at Alex’s wrist, pulling her so that she was half kneeling on the bed.
“I’m too tired to do it myself,” she said by way of explanation. When Alex still didn’t move, Kara sighed in exasperation. “Will you please groom my wings?”
Alex’s heart skipped a beat. She couldn’t have heard that right. But Kara was looking at her expectantly, all splayed out for her, begging Alex silently to just give in and straddle her and do as she’d asked. But Alex was frozen in place. Her breathing was shallow, thoughts racing. She’s not in her right mind. She’d never ask you for this. You’re crossing a line.
But as badly as Alex wanted to listen to her thoughts, Kara was still gazing at her with desperate hope in her eyes, a pout starting to form, and Alex just couldn’t listen to reason any longer. She pushed past the haze of guilt in her mind, reminding herself that it was her job to take care of Kara and that that was all she was doing, and moved onto the bed to straddle Kara’s lower back. She hesitantly lowered a hand to the flat of Kara’s back, over her shirt, and pressed down with a steady pressure, dragging her hand down to Kara’s lower back. Kara let out a soft sigh and Alex repeated the motion with her other hand, increasing the pressure, since she knew she wouldn’t be able to hurt Kara even if she tried. The muscles of Kara’s back were incredibly firm and well-defined, as they had to be to allow her to fly, and Alex couldn’t stop the arousal that washed over her as she continued the massage.
She cursed at herself silently, resenting that she couldn’t do something as simple as giving her sister a massage without perverting it in her mind. She trusts you enough to let you do this, and this is how you react? You’re sick.
Despite the screaming in her mind, as Alex continued rubbing her hands up and down Kara’s back in a steady rhythm, she couldn’t ignore the way her fingers itched to delve under the hem of Kara’s shirt and touch the warm, hard muscle there skin-to-skin. A little huff of frustration slipped out, and Kara craned her neck, looking back at Alex.
“That does feel nice, but it’s not quite what I had in mind,” Kara said, polite enough to avoid pointing out the obvious fact that Alex still hadn’t touched her wings.
“Please, Alex,” she added, a whine creeping into her voice. “I need y—I need this. It hurts.”
It hurts.
Alex’s heart ached. She couldn’t stand to see Kara in pain. If there was anything she could do to stop it, she had to. It was part of her job as Kara’s big sister, she reasoned. And, well, even if Alex was getting a little something extra out of it, as long as Kara was none the wiser, maybe it would be okay. As long as all of Alex’s dirty, vile thoughts stayed in her head, where they belonged, she could let herself touch.
Slowly, reverently, Alex’s hands crept up Kara’s back to the base of her wings. Kara’s breathing quickened, just a little, just enough for Alex to notice, as her hands neared Kara’s wings. Alex swallowed thickly, a part of her still apprehensive. Just do it. She needs you. You need to make her feel better.
Alex let herself touch.
The moment her fingertips made contact with the soft, downy feathers at the base of Kara’s wings, Kara gasped. Alex jerked her hands away like she’d been burned, her thoughts racing. You hurt her. You couldn’t even do this right. What’s wrong with you?
“No,” Kara begged. “Alex. Wait. That felt—don’t stop.”
Her voice was breathy, and Alex noticed a flush spreading across her face. This was wrong. She shouldn’t be doing this. Obviously, touching a Kryptonian’s wings was much more intimate than Alex had realized. She tried to ignore the heat that pooled between her legs at the realization of what Kara was feelling. She tried to convince herself to pull away, to put as much distance between herself and Kara, until Kara was in her right mind again. Because surely, Kara wouldn’t want this if she was sober. If she were sober, she’d never have asked Alex to do this for her.
But, as hard as Alex tried to convince herself to leave, she stayed rooted to the spot, hands still hovering in midair. She hesitated too long. Kara grew impatient and reached behind herself, grabbing Alex’s wrist with an iron grip and pulling it back towards her wing.
“Please, Alex.”
Fuck.
With those two words, Alex was done for. Her resolve shattered and she gave in, lowering both hands back into the soft feathers at the base of Kara’s wings and rubbing the muscle there. Kara let out a low groan of relief, which went straight to Alex’s already throbbing clit.
Seeing her wings up close, Alex was beginning to understand what Kara had meant when she asked her to groom them. Some of her feathers were shoved out of place, looked loose, and a few of them even were broken. Alex instinctively clicked her tongue with worry, thinking about how much wear and tear Kara’s wings must take on a daily basis.
“Will this hurt?” she asked softly, leaning over Kara’s left wing to wrap her fingers around the shaft of a broken primary.
“Mm… a little. But in a good way,” Kara replied, already sounding dazed with pleasure. Or maybe it was just the alcohol, and Alex was seeing what she wanted to see.
Alex tugged at the bent feather and found that it came out without putting up much resistance. Kara gasped as it popped out, then made a small noise of contentment as Alex rubbed her fingers over the space where the feather had been. Alex decided to work her way inwards, starting with the primaries of each wing, methodically fixing and straightening each feather, and removing any that were dead or broken. Kara turned to putty under her fingers, letting out little whimpers and moans that drove Alex crazy, made her want to lean over and kiss the skin of Kara’s neck, grind on her ass. Instead, she settled for shifting her hips subtly against Kara’s ass, trying to get any friction whatsoever against her clit, but it wasn’t enough.
Alex moved on from the primaries to the secondaries, and then the coverts. She noticed that the closer her hands got to the base of Kara’s wings, the more Kara seemed to whimper and squirm. That must be the most sensitive area, Alex reasoned, so she left it for last. She wanted to make this good for Kara. She didn’t want Kara to regret letting Alex do this.
“Alex,” Kara whimpered as Alex’s hands neared her scapulars, the feathers nearest to Kara’s shoulders. The way Kara said her name made Alex’s stomach lurch with lust. “I should uh, ah,” she paused, letting out a little high-pitched sigh when Alex pulled out another broken feather, “probably tell you.”
Alex paused.
“Tell me what?”
“The last part of the grooming. It’s, uh. Well, there are glands?” Kara said, as if it were a question. Alex waited for her to continue, and Kara flushed, fumbling for words.
“I haven’t—I mean, you know I don’t let anyone touch my wings. I’ve never… had to talk about it.”
Kara paused again, looking even more embarrassed.
“At the base of my wings, there are oil glands. You need to massage them and coax the oil out and spread it on my wings,” Kara finally said, all in a rush. That doesn’t seem like a big deal, Alex mused, somewhat confused by Kara’s hesitance to talk about it. She moved both of her hands to the base of Kara’s left wing, searching among the feathers for what Kara had described.
Her fingers brushed over a soft, grape sized bump, and Kara lit up with pleasure, writhing under Alex.
“Oh, Rao!” she cried out, and Alex wasn’t imagining things this time when she heard the pure arousal saturated in Kara’s voice.
“Kara…” Alex said, an implicit question in her voice. Do you really want this? Are you sure? With me?
“Don’t stop, Alex,” Kara pleaded, and that was a good enough answer for Alex. She rubbed her fingers against the bump, eliciting a string of moans from Kara. As Alex worked the gland in her fingers, it began to produce a steady stream of slick oil. Alex could smell it, heady and musky and Kara, and she wanted to lick it off her fingers, but she resisted, knowing she’d need it for Kara’s wings.
Alex hesitated for a moment, thinking; she didn’t want to remove her hands from the gland, but she needed to spread the oil on Kara’s wings, needed to take care of her sister, make sure her wings were healthy. She knew what she needed to do, but it was crossing a line. A line that had already become so blurred, she could barely make it out, but a line nevertheless. She glanced at Kara’s face. She looked positively blissed out, her jaw slack as she drooled into the pillow, so lost in the pleasure that she didn’t care. Alex made up her mind.
She bent down and placed a tender kiss to Kara’s oil gland. Kara’s whole body stiffened, then shuddered. Another stream of oil gushed from the gland, getting on Alex’s lips. She licked it off, savoring the taste of pure Kara. Now that her hands were free, she slicked them in the oil, then ran them up the length of Kara’s wing, making sure to coat every feather in the viscous liquid.
Alex suddenly came to realize that, at some point, she’d started unabashedly rutting against Kara’s ass. Each of Kara’s moans and whimpers were going straight to her clit, driving her crazy with need for Kara. Even as shame washed over her for using her little sister to get off, she kept moving her hips, unable to stop herself.
“Shit, Kara,” she swore, in between placing kisses along Kara’s back between her shoulders, making her way over to Kara’s other wing now that the first one was completely coated in oil. She quickly located the matching gland on that side and teased it with her tongue. Kara reacted beautifully, letting out a string of Kryptonian interspersed with Alex’s name.
Alex worked efficiently, coaxing oil out of the gland with her mouth until her hands were coated again, then spreading it along Kara’s wing, working her fingers in deep amongst the soft feathers. Kara’s breathing was ragged, and Alex could feel her pressing her ass up against Alex’s crotch, grinding against her, needy. Each pass of Alex’s hands through Kara’s feathers only served to reduce Kara further, breaking her down bit by bit. Seeing her sister like this, so desperate, so needy, because of her, was doing things to Alex too. She let out a low moan when Kara tilted her hips up again, pressing her ass against Alex’s crotch and giving her some much needed friction.
Shit. There’s no going back from this, Alex thought frantically, but she was too far gone to put a stop to things now. With one last pass of her hands through Kara’s feathers, she finished slicking up Kara’s other wing, and sat back up, panting slightly, lips glistening with oil.
Kara surprised her then by twisting around so that she was on her back, staring up at Alex through her lashes. Kara’s entire front was flushed red and her chest was heaving. Alex stared down at her younger sister, spread out under her, wings wide and glistening.
“You’re beautiful,” Alex breathed, entranced by the sight of her.
Kara squirmed and turned her head to the side, her face turning even more red, if that were possible. Then she went still, and for a moment, Alex’s heart dropped, thinking that the encounter was over. But then, Kara leaned up, bringing her face up to Alex’s, only centimeters away from touching her.
“Kiss me,” she whispered, barely audible. Her breath ghosted over Alex’s lips, causing goosebumps to break out on her arms as she tried to comprehend what her little sister had just said to her. Before she could give it any more thought, her body was moving forward of its own accord, closing the distance and kissing Kara. Kara melted into the kiss, immediately parting her lips for Alex to explore Kara’s mouth with her tongue. Alex ran her tongue along Kara’s bottom teeth and Kara moaned into her mouth, grabbing at Alex’s shoulders to pull her in and deepen the kiss. Alex’s hands found their way back to Kara’s wings, rubbing firm muscle under soft feathers. Kara shuddered.
“I need—more, Alex,” Kara begged, breaking the kiss. Alex knew what she needed. She paused in her massage of Kara’s wings to undo the zipper of Kara’s pants, shoving them down to Kara’s knees but leaving her panties in place. Alex watched as Kara squeezed her thighs together, seeking badly needed friction. Alex extended a hand and slid it between Kara’s thighs. Kara was so wet that Alex could feel it through her panties, soaking through. She pressed the heel of her hand against Kara and Kara furiously pumped her hips up to meet it, grinding desperately on her.
Alex’s head was swirling with lust. She was straddling one of Kara’s legs, humping it like a dog while she touched her little sister. She drew in a slow breath, trying to collect herself before she took the next step. She wanted this to be good for Kara, after all. Trying to keep her hands from shaking, she dipped her fingers under the waistband of Kara’s panties and pulled them down, exposing Kara. Kara was so wet that Alex could see it glistening on her thighs.
“Say it,” Alex commanded, surprised by her own authoritativeness. She needed to hear Kara say it, to admit that this was what she really wanted, to quell the whisper that still lingered in the back of her mind, telling her that she was wrong for doing this. Kara whimpered.
“Please, Alex…” she tried, but Alex shook her head, still holding back. Kara groaned in frustration, squeezing her thighs together.
“Touch me?” she tried again. Some base part of Alex’s lizard brain had been hoping for more vulgarity in Kara’s words, but it would have to do. Alex slid two fingers through Kara’s wet cunt, spreading the wetness over her clit and then circling the small bud teasingly.
Alex moved the hand that wasn’t playing with Kara’s cunt back up to her wing, raking her fingers through the downy feathers that covered the top of Kara’s wing.
“Alex,” Kara insisted. She reached down to grab Alex’s hand, pressing it hard against her clit and then jerkily rubbing her hips against it. Seeing Kara come to pieces in the throes of pleasure like this was making Alex’s own hips move faster against Kara’s thigh. Alex managed to tear her eyes away from Kara’s cunt, making eye contact with her sister and asking a silent question. Kara nodded urgently, loosening her grip on Alex’s wrist to allow her to reposition her hand and slide a finger inside of Kara. It went in easily with the combination of Kara’s wetness and the oil still coating Alex’s hand.
Kara was impossibly hot, and tight, and wet, and perfect. Her face was screwed up with pleasure as Alex began fucking in and out of her, adding a second finger when she thought Kara could take it. Kara’s grip on her wrist was tight again, forcing Alex’s fingers in and out of her at a pace set by Kara. Alex tried to memorize the feeling of being inside her sister’s cunt, knowing that she’d be spending many nights thinking back on the feeling of it. She could feel Kara’s hip thrusts becoming more erratic, could hear her breathing becoming frantic and heavy. Kara was close, and the thought that she was about to bring her little sister to orgasm brought Alex right to the edge too.
“You’re so perfect,” Alex murmured, in awe of everything about Kara. Kara’s breath hitched, and she let out a string of high-pitched moans, and then her cunt was clenching around Alex’s fingers and Alex was coming too; the steady pressure of Kara’s thigh between her legs combined with the sounds Kara was making and the way her head tipped back in ecstasy as she came made it easy for Alex to come without so much as touching herself.
Alex kept fucking into Kara, and rubbing her wing, and grinding on her thigh until both of their orgasms had subsided. When it was over, Alex bent over, leaning into Kara’s chest. She could feel her blood rushing in her ears, her heart pounding. As the high of her lust wore off, fear and self-hatred began to dig under her skin. What did you do? How could you let this happen? She’ll never look at you the same way again.
Kara, though she still looked slightly out of it from everything that had happened, seemed to notice Alex’s change in emotion. She pulled her closer to her chest.
“I don’t regret this,” Kara said simply. “And I won’t regret it tomorrow, either. You’re my sister, but you’re so much more than that. I wouldn’t have wanted to have this experience with anyone but you.”
Alex let out a long sigh into the crook of Kara’s neck. She pulled away to look Kara in the eyes, try to judge whether she was telling the truth. Staring back at her, from the depths of Kara’s soul, was adoration like Alex had never seen before.
Maybe Kara would look at her differently from then on.
Maybe that wasn’t such a bad thing.