Chapter Text
Months since Earth's Mightiest Heroes took down Cadmus, Kara and Barry had spent every single day talking during their free time. Now and again, Kara would have to take off to 'chase down a lead', and Barry would 'go for a run'. But mostly they kept in touch, reminiscing about each other's days to each other. It was an important part of life to decompress. But lately that wasn't the case for the 'SuperFlash' couple (as Winn had so graciously dubbed it). It had been nearly thirty-six hours since Kara had heard from Barry, and despite the constant texts of 'Hey, you okay?', and 'I'm worried, Bar. Is everything okay?' there was complete radio silence from the Scarlet Speedster. It was starting to weight on her, quite a lot, and Alex was the first to take notice. James, Winn, J'onn, and Lena followed suite in taking notice, but sisters intuition trumps all.
Finally catching Kara at a moment of her leisure, Alex slipped inside the apartment and closed the door behind her, satisfied with the soft click of the lock sliding into place. It wouldn't stop the Girl of Steel if she attempted to flee, merely provide Alex the opportunity to threaten to cut off Kara's supply of D.E.O. supplied pizza and potstickers. It wasn't much, but it was enough.
That was Kara Danvers' true Kryptonite. She looked at Kara, fiddling with her phone as she sat on the couch. She was currently twenty minutes into an episode of the Originals, and Alex rolled her eyes fondly. Of course, Kara would be obsessed with vampires, werewolves, witches and warlocks. But Alex had to admit, Elijah Mikaelson was perhaps enough to turn her straight. Shaking off the thoughts off the attractive Mikaelson's (especially Rebekah) she grabbed the remote off the kitchen counter and paused the episode, chuckling sweetly at Kara's irritated gasp; Kata craning her neck towards Alex, wide-eyed, furrowed browed, and crinkled nosed.
"Who are you? What have you done with Alex?" Kara feigned humour, Alex saw right through the facade. Her sister couldn't stop fiddling with her mobile phone, eyeing it in case it vibrated in her hands. Every time it did, Kara let a growl escape the back of her throat. It wasn't Barry. It seemed everything in the universe appeared on her phone's lock screen before the love her life, his name with two yellow hearts on either side to the match the colour of the lighting emitted when he ran faster than the speed of light.
Alex's teeth were about to rot from all the sweetness, but lately Kara's mind has been preoccupied with waiting for Barry to answer her sickeningly desperate text messages. It wasn't like Kara could just fly over to his apartment and knock on the window. It was a little harder considering they were thirty-six earths away from each other in the multiverse.
Watching as Kara sighed, Alex sat down and placed an arm over her shoulder, tugging at the Kryptonian to lay down. Kara always was more willing to decompress in Alex's embrace, and the elder Danvers took much pleasure in exploiting it. Sharing a bedroom with someone for nearly nine years showed you things no one else would even notice if it were staring them directly in the face. She gently sighed and plucked the phone from Kara's grasp, switching it off and storing it in the inside pocket of her leather jacket, tugging the outwear over her shoulders tighter.
"We need to talk, Kara. You've been acting off and I swear if Lena texts me one more time asking if you're okay, I- I can't be held responsible for what I'm going to do to her!" Alex joked and luckily it prompted a chuckle from Kara. Of course, Alex wouldn't dare hurt Lena unless it was life or death, Lena had saved Kara's life countless times and they were best friends. Plus, Alex would never admit it but the youngest Luthor had left an impression on her.
"Talk to me, I'm here for you." Alex cooed softly and ran a hand through Kara's beautiful blonde locks. She knew what was bothering Kara, but she had to push her sister into saying the words aloud. Afterwards, Kara and Alex could devise a plan of attack.
"I'm... Rao, I'm gonna sound like such a child. I miss Barry, and I- I'm worried." Kara admitted, feeling her shoulders suddenly heavier. She fiddled her fingers as if she still had her phone within her grasp. Alex made a mental note of that and offered a nod of acknowledgement.
"He hasn't been answering my texts, that's not normal behaviour, Alex! It's been thirty-six hours, and I haven't heard a single peep. Can you imagine if Ma-" She cut herself off before she mentioned Maggie, but it clicked in Alex's mind. That name was strong enough to curve Alex's usually straight lips into an uncomfortable frown.
"You don't sound like a child, Kara, you sound like you care," Alex started and Kara's bottom lip quivered gently. Perhaps it was in relief, perhaps it was in sorrow. Either way, Kara slowly curled up into Alex further. She always felt safer in Alex's arms, always had been, always would be. "I have an idea! Didn't you say that Crisco-"
"Cisco."
"Cisco," Alex corrected herself. "Didn't you say that Cisco made you a device to travel back and forth between universes? Why don't you go over to Earth-1 and find out what Barry's up too? I can let J'onn know as soon as you leave. He'll just have to fill in as Supergirl for a few days." Alex and Kara both chuckled sweetly at the thought of J'onn pretending to be Supergirl. It always lead to hilarious encounters that J'onn would rather leave unspoken, but Alex never let him live down.
As Alex spoke, Kara's face lit up like fireworks. She practically began to bounce up and down on her couch. She'd considered this idea, of course. But she'd talked herself out it, fearing Alex wouldn't give her blessing on the endeavour. But after hearing Alex speak of the mission with such zeal, Kara couldn't help but be filled with determination. She shot up out of her sitting position and dashed into her room, swapping out of herself pitying pyjamas, and into her Supergirl attire, cape flapping in the soft breeze coming through the open window behind Alex, ruffling her auburn hair with every gust.
Kara searched for the device Cisco had given her after the Dominator Invasion. It was both a token of friendship, and of gratitude for helping a group of complete strangers in their time of need. Even after being mind controlled into nearly killing Barry and Oliver who'd avoided such an unfortunate incident. She'd placed it somewhere in her apartment but couldn't quite remember where. It was a silver disc with a blue centre, easy to misplace and hard to spot. But it was a material that wasn't commonly found in lofts, and Kara could detect it using her x-ray vision. She scanned the loft and spotted it by the window, left of the television on a countertop. She quickly skipped across the room and grabbed the device, fiddling with it within her grasp.
"He's not gonna... find me... clingy, is he?" Kara muttered under her breath, anxiously running her fingers through her blonde locks. Last thing Kara wanted was to push Barry away when all she wanted to do was get closer to him. If he found her clingy or possessive he might sever ties, and Kara wouldn't be able to do anything about it. After all, Earth-1 and Earth-38 aren't exactly next door.
"Maybe I should just wait-"
"Kara Danvers, if you don't open that breach, I'll do it myself and throw your ass through. Do you understand me?" Alex threatened, lacing her voice with playful venom. Of course, she'd support Kara no matter her choice but Barry made her happy, and Alex didn't want Kara to jeopardise that. Especially in fear of jeopardising it. That was the most foul-tasting irony the universe could slam down on your plate. She walked up to Kara and brushed a few stray hairs off of Kara's face, tucking them behind her left ear with a soft smile, leaning in to kiss her forehead.
"I'll cover for you at the D.E.O. I'm sure J'onn won't be too mad," Alex smirked and rolled her eyes fondly. He was going to be pissed. "Go get 'em."
"I love you, Alex."
"I love you too, Kara."
Pressing the button on her device, Kara watched as a breach appeared, beautiful swirling in the middle of her loft. She admired its beauty but snatched her phone from Alex who'd recently removed it from her breast pocket. She unlocked it and tapped on Lena's contact, typing away at a small message that would explain her absence from CatCo and 'Tuesday Night Game Night' as Winn had dubbed it. He enjoyed naming things, and Kara wasn't about to ruin his fun.
"I'm heading over to Earth-1 for a little while. I won't be gone for long, I'll bring you back a souvenir, I promise! See you soon <3" - 10:03 PM
[Lena Luthor] "Be safe, Kara, I expect something unique. I'll cover for you at CatCo. Lucky I'm your boss" - 10:03 PM
Kara smiled down at her phone and sent the same message to Sam, with minor alterations, but was met with no response. She frowned but assumed Sam was busy taking care of Ruby. They were probably watching a movie together, seeing as it was Friday. That was their designated time together, and Kara found it endearing. She stuffed her phone in her pocket and looked at Alex with a soft smile.
"Call me if you need me, I'd love to experience a different Earth." Alex chuckled and leant forward to give her sister a warm hug. Kara returned it happily and kissed Alex's cheek, stepping back towards the portal. She could feel the air in the room being sucked into the portal ever so slightly, like a cool breeze coming in through the open window.
"See 'ya later, Alex! I'll miss you!" And with that, Kara jumped into the breach. It snapped shut behind her, and Alex was left all alone inside Kara's apartment. She slumped into Kara's couch and decided she could use Kara's Netflix for the time being. It wasn't like Kara was going to be around to complain. She went to the start of the Originals and pressed play, deciding a binge-watching marathon was a perfectly acceptable way to spend a Friday evening.
~~~
Back at the Fortress of Sanctuary, Reign slipped on her mask, feeling the extra-terrestrial metal against her skin. It fit her face perfectly, guarding her true identity. Not even Supergirl was smart enough to piece it together, and the Worldkiller wasn't planning on being found out. Even her secret identity didn't know Reign was a part of her.
But something was off, Reign could sense something was wrong. She went to ask the shipboard artificial intelligence but heard a loud surge of electricity. She snapped her focus behind her to find a man in yellow, eyes glowing red with electricity. His entire form was distorted with vibrations and he crossed his arms, a lightning bolt across his chest on a black emblem with red outer ring. He didn't seem even concerned to be facing down against a threat even the Girl of Steel couldn't defeat. He was either foolish, or brave. Perhaps both. She recognised his abilities immediately, Kryptonians kept record of Speedsters. Reign could spot one a mile away.
"What do you want, Speedster?" Reigns voice was distorted, glaring at the Speedster behind her caged mask.
"An alliance. I want my Flash and your Supergirl dead. Who better to help me then Reign, the Worldkiller?" Eobard's voice appeared seemingly inhuman as a result of his vibrating vocal cords. At the sound of his request, Reigns lips curled into a sadistic smile. Perhaps she could finally enact justice on not just one Earth, but two.