A/N: Warnings: Some NSFW discussions about the previous night between Kara and Lena. Also some child violence, if you are sensitive to it, you can definitely skip to different dialogues. Additionally, there is a graphic depiction of death but not for any major characters.

Lena woke up feeling boneless.

She was pretty sure that even though her walls had been sound proofed prior to her buying the place, her neighbors had heard her screaming in ecstasy throughout the night.

Kara had been insatiable. Whispering wicked things into her ear that had made her wetter than she had ever been in her life and the blonde had fulfilled a fantasy that Lena had since moving in.

She took her right there out in the open on her balcony.

I want you so badly Lena.

I want to feel how wet you are.

Kara knew. Somehow, she knew that the possessiveness she was displaying was turning her on and Lena desperately, achingly spread for Kara like she was put on the earth to be fucked by her.

While she was knuckle deep inside of her new fiancé, Kara told Lena how good she looked taking her fingers, how beautiful she was, what it felt like to be inside her.

So good, so wet for me.

The praise reached down and unlocked something in Lena she didn't even know existed and wave after wave of pleasure kept crashing into her and unleashing a desire to have Kara in every place in her body.

Kara fucked her from the balcony, to the kitchen and lastly in the bedroom until Lena was sure she blacked out.

The blonde had always been a focused lover, not necessarily a vocal one but attentive and passionate.

Last night had been a stark contrast to the way they usually made love and Lena didn't know whether to be alarmed or ecstatic over it.

But, for the time being, she reveled in the feeling of being thoroughly ravaged and claimed by her fiancé.

As she thought of Kara, the CEO realized then that she was alone and grabbed her phone from the nearby nightstand to check for messages. Kara's was the only one that she opened.

Kara (6:00 am): Headed to the DEO, Brunch later?

Lena smiled and typed out her response.

Lena (6:45 am): Of course darling. What time?

Kara's phone vibrated in the middle of a briefing being lead by J'onn Jones. The hero's disinterest had been noted by her sister and Winn as she texted while J'onn was speaking.

"I'm sorry supergirl am I boring you?" The Martian asked frowning slightly.

"Yes actually." Kara said bluntly, pausing in mid text to glare at the director.

Alex narrowed her eyes and whispered lightly to Kara, "did everything go ok last night?"

Kara's grinned maniacally as she recalled the many ways she took Lena and her plans for an encore later in the day. "Last night went perfectly." She boasted and raised her hand to show the impressive ruby engagement ring resting comfortably at the base of her finger.

"Wow. So Lena was on to you, I take it? The ring is astonishing." Alex replied, smiling at her sister's happiness, though her instincts were telling her that something was off.

"Of course. She never misses anything. She's brilliant and under appreciated by most." Kara finished admiring her ring and brought her attention back to J'onn who had begun impatiently tapping his foot.

"If you ladies are done, I'd much rather discuss the alien we need to apprehend."

" Well, I would much rather still be in bed with my fiancé but duty calls." Kara stated mockingly, rolling her eyes with her ending words.

J'onn glanced briefly at Alex who shrugged, before he returned his gaze to Kara. "I need you to take this seriously." He said sternly then continued, "This Astonian has been kidnapping alien children and experimenting on them. We have received over 50 missing person reports which the government handed over to us because they feel the situation isn't a threat to American citizens."

"Not a threat to humans, you mean." Kara spat viciously and glanced up at J'onn before standing. "Spare me the rest of the briefing and just tell me where he is."

The Astonian was holed up in an abandoned factory in the warehouse district of National City. Kara found the building easily and landed on the roof. Using X-ray vision, she was able to see the twenty children that were restrained in stolen hospital beds in different rooms, and the culprit seemed to be in the basement, which she was certain, served as his lab.

She made quick work of releasing the children. Disgusted by the state she found them in, she sent a message to Alex, letting her know that some of the children had been mutilated and were obviously traumatized from the tortuous experiments they had been subjected to.

Alex (8:33 am): We are alerting the local paramedics. Kara, please remember, you're only apprehending the Astonian and turning him over to us.

Kara didn't respond.

Instead she made her way down to the basement to find the alien hovering over a table filled with bloody tools and vials with liquid in them. He muttered to himself in his language angrily, and then said in English. "Another, I must find another."

"You won't be finding anything." Kara said lowly, as her eyes glowed red.

The alien turned around startled, knocking over several vials on his table before taking in Kara's appearance. "Kryptonian." He hissed and Kara raised an eyebrow. "Yes." She confirmed and he took a step back. "You and I, we could work together. Your kind were technologically advanced, much more so than anything I have seen on this planet." He pleaded as he felt the raw power emanating from the blonde.

Kara felt of a rush of anger as she thought of all the children the Astonian had abducted and tortured and she spoke in a deadly whisper. "I would never work with a vile, disgusting, dishonorable creature such as yourself even if my life depended on it." She began advancing on him slowly, smelling his fear and feeding off it. "I should tear you limb from limb, dissect you and let you bleed you out, just like you were doing to these kids!" Kara's power began to gather around her, and scarlet lines glimmered across her skin. The alien shrieked, phased out of his lab, and reappeared outside where several DEO agents stood with their guns aimed at him.

"Surrender Astonian, there is nowhere else for you to go!" J'onn shouted as he stepped out of the van with Alex and Winn behind him.

Kara appeared then, seemingly out of thin air, eyes still illuminated by solar energy and rage. The alien screamed again and began running away in a futile effort of escape.

Realizing what her sister was about to do, Alex shouted desperately, "Kara no! Don't do it!"

Alex's desperate pleas fell on deaf ears as Kara released two powerful energy beams that obliterated every inch of the Astonian before he could teleport anywhere else.

Kara had felt the moment the waves collided with his body and his skin melted from the heat of it. Her hearing picked up his horrified scream as the impact from the beams crushed his bones to nothing.

She felt him die.

She felt the way her power surged and coursed through her as she avenged those he had killed and hurt.

It was exhilarating.

"Agents! Ready your weapons!"

Kara turned at the sound of the given order to find guns loaded with Kryptonite pointed at her. Her eyes widened as she glanced over at Alex and noticed tears running down her cheeks. The agent's hands trembled slightly but her hold was strong, and she locked eyes with her sister, brown clashing with crimson lined blue.

Forgive me Kara.

"Fire!"

The sound of Lena's stilettos clicked harshly against the concrete floors of the DEO office as she barged her way in past several agents, glaring daggers at anyone who tried to intercept her until she found the face she was looking for.

"Lena, you cannot just come in here like this." J'onn yelled as she breezed past him looking for Alex. J'onn grabbed Lena's wrist and yanked her back to him forcefully. "Lena, you have to stop it! You don't understand what's going on!"

"Where is she?!" The brunette demanded not backing down from J'onn or the agents who surrounded her.

"Lena!" Alex had finally made her way to lobby after hearing the commotion, "Lena, let me explain!"

"Yes, please Agent Danvers, explain to me why on nearly every news channel across the country, there is footage of you and your team shooting several rounds of Kryptonite into Kara then dragging her unconscious body into a DEO van."

Alex groaned, hearing the details of what it must have looked like to people watching the scene unfold on television made it sound terrible, but, what they didn't know was that the DEO had saved everyone from a potential threat.

And that threat, was Supergirl.

"J'onn let Lena go, bring her upstairs."

Lena sat at a table with J'onn, Winn Schott and Alex, all looking somber and all avoiding her eyes. A feeling of dread settled into her stomach, but she willed herself to calm down and waited for one of them to speak.

It was Winn who broke the silence.

"Lena, has Kara been acting different with you lately?" The technician asked softly and delicately, as if he were approaching a rabid animal.

The answer was yes, Kara had been acting differently. Since Kara's proposal, Lena had noticed that her voice had taken on a lower octave than normal and she was exhibiting possessive behavior in things she said to her. Not that Lena minded, she figured the prospect of marriage had triggered a healthy desire for Kara to claim her more often. The thing that was most notably different, was the sex.

The way Kara had burned her from the inside out in flames of sheer ecstasy. The way she made her scream until she forgot her own name.

Lena cleared her throat and crossed her legs, not wanting to divulge all the details, especially about their intimacy, since the people in front of her clearly had more information than she did, and she answered with a simple "Possibly."

Winn nodded and Alex spoke up for them. "What do you mean by "possibly" Lena?" She asked narrowing her eyes.

Anger darkened the emerald pools of Lena's eyes as she regarded the agent. "Alex, I fail to see what my observations about Kara have to do with what you did to her this morning!"

"Because had you told us about what you may have "possibly" noticed, we wouldn't have had to do what we did!" Alex shouted right back at Lena and J'onn interrupted the CEO before she could give a scathing reply.

"Ladies please. Lena you're right, you deserve to know what happened and the reasons for our actions…" He trailed off making sure he had her attention before he continued. When Lena turned her angry gaze to him, he continued. "This morning, when we called Kara in, she was in a bad mood. We were having trouble apprehending an alien from the planet Astonia who was kidnapping alien kids to run experiments on. Kara made a great deal of letting us know she'd rather be in bed with you instead of being at a boring briefing."

Lena sat silently knowing that Kara would never question J'onn's authority or minimize any alien threats.

The director continued, "After making her feelings known, she took off and found him in the area we had told her to go to, but she didn't capture him Lena-"

"She toyed with him, followed him as he tried to get away from her and she made him explode using heat vision." Alex cut in harshly and folded her arms. Lena's eyes met hers again in disbelief and she shook her head as she whispered, "no, no, she couldn't have."

"She did." Winn confirmed sadly.

"K-Kara doesn't have it in her to kill somebody." Lena said defeatedly, "Something must've happened to her."

Alex nodded, "Yes, something did happen to her Lena. Three years ago, Kara had been acting the same way she is now. She was enraged all the time; she disobeyed orders and terrorized the city. She even threw Cat Grant off her balcony and caught her right before her body hit the cement just to prove how powerful she was. She even…" Alex stopped when her voice broke at the memory of it. "She almost killed me and if it weren't for J'onn she would have. It was horrible."

"But I don't understand, what the hell could've caused Kara to do all that?" Lena asked, desperate for an answer to make sense of it all.

"Red kryptonite." Answered J'onn. "Maxwell Lord had been the cause of that first exposure. He had created it in order to stop an evil Kryptonian named Non from going through with an attack on humans but it backfired and he was the only one able to create an antidote to undue the effects of the red kryptonite on Kara."

"Then use it again." Lena said pointedly and Winn shook his head, "It's not working Lena, we've tried. Whatever or whoever made this used an entirely different formula than Maxwell did. This red K is stronger, faster and much more potent than its predecessor and based off the tests we've ran, it's merging with her brain chemistry instead of simply affecting it."

Lena sighed deeply, and the room fell silent again.

"I'm afraid, Kara must remain in our custody until we can find another antidote. She's simply too powerful to be free in her current state." J'onn said gravelly looking briefly at Alex. "I honestly don't think I'm strong enough to stop her again. Her strength has grown exponentially since the first exposure and she has bested even Superman in battle." He brought his attention back to Lena. "I hate to put pressure on you Lena, but it really is a priority that we find a cure before things get worse. We really do not need a rogue Kryptonian, uninhibited and angry, roaming the streets of National City." Lena nodded in understanding and met his eyes. "I'm sure I can create an antidote for her, once I run tests on both her and the red kryptonite in her system, I should be able to do something."

The men nodded and left the room leaving Alex and Lena alone.

"Lena, I'm sorry about earlier. It's just, I never thought we would be back here again." The agent said sadly, "Kara will hate herself for anything she does under the influence of the red K. She was deeply depressed for a long time when she was first exposed to it and the city held a grudge against her until it all blew over." She ran a hand through her hair and paced the room as Lena sat quietly in thought. "I don't want to see her go through that again." Alex added before taking a seat again.

"Neither do I Alex." Lena said gazing longingly at her engagement ring.

Alex caught her eyes and smiled sadly, realizing how hard it must be for Lena to hear all this, she sympathized with her future sister-in-law. "Hey. Kara's going to be ok, especially with you here to help Lena."
Lena glanced up at Alex warmly, and offered a small smile that didn't quite reach her eyes. "I hope so."

"We ran a few tests on her while she was unconscious. You can use some of the blood samples we took for your research. One theory that Winn and I came to was that the ruby in Kara's engagement ring had been tainted somehow with red kryptonite. If you could just tell us the name and location of your jeweler, we would appreciate it. This will help us in finding the source." Alex explained as they made their way down to the lower level and came to a stop where Kara was being held.

Lena felt a wave of guilt swim through her at the implications and she felt compelled to state the obvious. "Alex, I had absolutely nothing to do with-"

Alex cut her off before the CEO went any further. "Lena, we know that you didn't give Kara something to intentionally hurt her. If anyone knows you love my sister, it's me." The agent said while rubbing Lena's shoulder trying to assuage her anxiety. "We will get to the bottom of this and any help from you will make it easier for us to figure it out."

The brunette nodded and they continued to the holding cells.

"When Kara woke up, she broke through the kryptonite restraints and nearly killed Winn and another doctor. So J'onn and a dozen other agents, ended up putting her in a holding cell until we can get this all sorted out. For your own well being, please don't get too close to the glass. The power dampeners have been working so far but we don't want to take any risks. We still have yet to establish just how powerful Kara really is." Alex cautioned and they came to a stop at the entrance of the room.

Alex gave Lena an earpiece and told her to use it if she needed anything before heading back upstairs. Lena felt that it was a way for Alex to listen to eavesdrop on her and Kara's conversation more so than a protective measure. Once the agent's footsteps sounded distant, Lena shoved the earpiece into her shoe, hoping it would muffle some of what the agent may hear.

Lena walked slowly into the large room and glanced up into the cell containing the Kryptonian who had occupied her thoughts from the moment she saw the footage of her capture on the news.

Kara.

The blonde's eyes pinned Lena to the spot with their intensity. Dark blue collided with emerald and Lena had to take a deep breath to ground herself when she took in the sheer power that Kara seemed to exude.

Lena watched as Kara raked her eyes all over her body. Kara's gaze was heated, a mixture of lust and contained rage. Lena could feel it intimately as if Kara was standing there touching her, stroking her wherever she saw fit.

It was intoxicating.

"Lena." She husked in that smoky voice she'd been using since she'd been infected by the red K. It fell over Lena in a light caress and she shivered in response. "Do you see what they've done to me?"

The CEO made her way slowly to the middle of the room until she was directly in front of Kara's cell. "Kara, you never told me about red kryptonite. I thought we had no secrets between us anymore." Lena said with a raised eyebrow and Kara smirked in response.

"That's not a secret Lena, I'm sure you can find a video of me throwing Cat Grant off of her office balcony anywhere on the internet." She said with amusement dancing in her eyes, "If you do, bring it down here, we can watch it together."

Lena shook her head and bit her lip. "Kara, this really is no laughing matter."

"It is actually."

"How so? You've killed someone." Lena said breaking eye contact for the first time, "Brutally, I might add, and for what reason?" She asked while circling Kara's cell.

"Because I wanted to."

That stopped Lena in her tracks, and she looked back up to find Kara's eyes locked on her. "What?"

"When I arrived to that alien's lab, he had a bunch of kids restrained on beds being prepped for experiments. Some of them had been mutilated, others were just in shock, terrified of what they had either seen or heard. It made me feel a fury that I hadn't felt for a long time and he deserved to die for his crimes."

"But who are you to decide who lives and who dies Kara. Who gave you the right to play judge, jury and executioner?"

Kara grinned wickedly as she responded "The earth did Lena. Humans did. They look to me and Kal-El for justice. The sun empowers me, makes me strong and I was chosen to be a hero. Do you think those children he had been kidnapping felt sad when they saw him die?"

Aside from the narcissistic ramble, Lena was inclined to believe that no, the children were not sad to see that the monster who had been torturing them was killed by Supergirl. And yes, Kara had been right about the powers that had been given to Kryptonians on Earth, but it was a very twisted logic that Lena would not give Kara the satisfaction of agreeing to.

So, she remained silent.

Kara's eyes stayed on her, watching her every move. "You know, every time I talk your heart skips a beat. When I say your name, your blood rushes. When I look at you, you have difficulty breathing."

Lena raised an eyebrow and felt her nipples harden in response to Kara's scrutiny and against her better judgment, she challenged her. "Your point being?"

Kara chuckled darkly, delighted that Lena seemed to have miss the point that under power dampeners and red sun light, the blonde shouldn't have been able to sense Lena in any way. "You want me." She teased.

"That's not news." Lena said unimpressed. "I've wanted you since the moment I saw you."

Kara smirked. "Yes. But not like this Lena. Not as I am right now…" She trailed off focusing on the dry swallow the brunette took and how she averted her eyes. "The Red Kryptonite fascinates that brilliant mind of yours, and the fact that it makes me uninhibited, more powerful and ruthless, draws you in like a moth to a flame."

Lena met her eyes this time. "I have always been drawn to you Kara." She argued weakly, knowing that the Kryptonian had a point. She was fascinated. She wanted to see all that Kara was capable of with the red K coursing through her veins. The scientist in her wanted to take Kara back to her lab and see how this form of Kryptonite affected the blonde's brain chemistry. She wanted to understand its potency and was curious about the limits of Kara's power. She wondered if, under the influence of the drug, Kara even had limits anymore. However, the CEO knew, against her dark desires, that she would need to create an antidote to bring the hero back to her senses as soon as possible.

"I can see your inner battle, and its why you and I found each other on a planet filled with billions of people. I know what it's like to want to give in to the darkness but fight against it because it's expected of you. I don't want to fight any more Lena, I want to embrace it. You and I could set this planet right without the laws and restrictions of the DEO. We can give justice in a fulfilling way not just by putting away the criminals but ensuring that they will never act again."

"Kara, what you're describing is a dictatorship…"

"What exactly has the legal system of this planet done for it's citizens? Is it not me and Kal-el that people cry out for? Hell, even the police and the government look to me and my cousin for help, because they are too weak Lena to think for themselves. Honestly, I should just leave and find a race more worthy of me." Kara said as if she were talking about the weather and not authoritarianism.

Lena considered her words carefully before replying. "If you felt this way all this time Kara, why didn't you ever tell me?"

Kara kneeled in the cell so that they were eye level. "You know that I live to serve others instead of myself." The blonde said bitterly, crimson lines dancing across her tanned skin., flashing in the depths of her oceanic eyes like a firestorm in the middle of the sea. "Well, I'm done Lena, I refuse to live for anyone other than myself."

Lena pressed her hands to the glass and gazed into the eyes of the woman she loved, searching for a trace of her beneath the darkness that had enveloped both her mind and body.

She wondered if Kara's heart had suffered the same fate.

"What about me? What about us?" The brunette whispered, blinking back tears.

Kara traced the features of Lena's face through the glass. Her fingers glided softly across it and Lena could feel the heat radiating from them even with an object between them. She lost herself in the blue of Kara's eyes burning into her own and failed to notice the cracks forming from the slight pressure of the blonde's touch.

"This is for us."