Disclaimer: I do not own Arrow or anything to do with DC. I do not make any money from the writing of this story.
*****
Laurel Lance's life had become really weird over the last few years. Fed up with seeing the guilty go free she had taken inspiration from her sister and become The Black Canary, and started patrolling the streets at night with her ex-boyfriend, her sister, his sister and her sister's ex-girlfriend.
She'd met people with superpowers and magic, saved the city from total destruction, and after walking in on her baby sister butt fucking a mutual friend Laurel had somehow allowed Sara to talk her into a lesbian orgy. So yeah, really weird, but Laurel was afraid it was about to get a lot more weird given Sara's actions during that lesbian orgy, and the worrying promise she had made her at it's conclusion.
She was unable to think of anything else for the next 24 hours, and it kept her up during the night, to the point that she had to get herself off at the memory of those obscene things she had been a part of, while desperately trying to ignore a question which haunted her mind that entire time. It should have been enough for Laurel to firmly tell Sara no to ever doing it again.
After all, sisters shouldn't be involved in the same orgy under any circumstances, and fucking her sister's lovers had been just too weird, even for her. But Laurel wanted to do it again. She didn't think she'd have the strength to say no if she was asked, and Sara had always been very persuasive, so Laurel wasn't sure she could, even if her fear was confirmed.
Confirming that fear wasn't easy. Laurel knew she wouldn't get anything out of Nyssa, Thea surprisingly didn't budge, and she just couldn't get Felicity alone to spill the beans. She tried calling her, only for Sara to answer the phone. She tried text and email, only for again Sara to answer for her girl. She tried approaching her at work, only for Sara to be there.
Finally she showed up early to the apartment of Felicity and Sara, and apparently Nyssa, for her second lesbian orgy, only for Sara to answer the door with a grin and wordlessly invite her in. Laurel rolled her eyes, and just about avoided freaking out until she was safely inside the apartment where at least no one could hear. Or at least, no one she didn't no.
"Can I talk to you?" Laurel turned to her sibling, before then glancing back at Nyssa and Felicity who were sitting on the couch, "Alone."
Sara smirked, "Anything you have to say to me can be said in front of my girls. There are no secrets between us."
Laurel gulped softly, and then after a brief hesitation stammered, "When... when you said I'd be going in the middle this time... you meant in the middle of Nyssa, Felicity and Thea. Right?"
There was a long pause, then Sara smiled wickedly, "And why should I let them have all the fun?"
For a few long seconds Laurel just stared at her sibling with disbelief, then breathlessly reminded her, "But, we're sisters."
"Yeah." Sara grinned teasingly, "I haven't forgotten."
"But, but...WE'RE SISTERS!" Laurel exclaimed. "It's wrong."
Sara shrugged nonchalantly, "That's what some people say about orgies. And polyamorous relationships. And lesbianism."
"But..." Laurel repeated in disbelief, "We're sisters."
"You keep saying that." Sara quipped.
"That's because apparently you need reminding." Laurel grumbled.
"Why? Because I want to follow Nyssa's example?" Sara questioned.
Which of course caused Laurel to look at Nyssa with disbelief, the assassin then smirking and revealing, "My sister and I had a... difficult relationship before I made her mine. Now things between us are much better, and there has never been anything more satisfying than robbing my big sister of her anal cherry by shoving a nice big cock up her ass."
"Oh God." Laurel croaked in disbelief, before nervously looking back at Sara, "And, and that's what you want to do to me?"
"Fuck yeah." Sara admitted, closing in on her pray, "It did wonders for the al Ghul sisters, so why not us?"
"Because, because..." Laurel stammered, "It's wrong!"
"And yet, you're here." Sara pointed out, "I pretty clearly implied what I wanted last time, and yet you still came."
"Yeah, to tell you it's not going to happen." Laurel snapped, and then when Sara gave her a disbelieving look the older sibling quickly added, "Don't look at me like that. Or try to turn this around on me. I know what you are doing, and it's not going to work. You don't think I haven't picked up on your tricks by now? Well I have, and they're not working."
"Aren't they?" Sara pushed, stepping into her sister's personal space. Then when Laurel didn't react badly Sara pushed, "You came here because you were curious, just like last time, when you let a girl who might as well be our little sister eat your pussy until you came all over her pretty little face. You knew it was wrong, that you crossed a line, but you didn't care. It felt good, and given our lives we deserve every ounce of joy we can get from it. So why not forget the pseudo-incest and go for the real thing? From what I hear, it's really, really hot... and there is just no way I could ever let someone else take your ass cherry. Mmmmmm yeahhhhh, it's got to be me big sis."
For a few long seconds Laurel just stared with disbelief at her sister, then she turned to Felicity and practically whimpered, "Felicity... I, I can't believe you're okay with this."
Felicity blushed, but admitted, "There isn't anything I wouldn't do for Sara. And honestly, I think it's fucking hot."
"Me too." Thea quickly clarified.
"Don't look at them, look at me." Sara demanded softly, as she slowly turned Laurel's face back to hers, "I wanted to fuck you before, but I didn't know how to handle it, so I screwed Oliver instead. It took me a long time to admit that to myself, and you're way too uptight to ever admit you're hot for me without a little push. Luckily for us both I'm ready to do what needs to be done to finally get you out of that shell of yours and turn you into the hot little slut you really are."
"Sara, please..." Laurel whimpered.
"Shhhhh!" Sara cooed as she continued holding her sister's face in place while she glanced down to her lips.
They stayed like that for what felt like an eternity, and then Sara slowly close the short distance between them and pressed her lips against hers. Oh God, Laurel was kissing her sister! Or more accurately, her sister was kissing her. Except while Laurel wasn't kissing back neither was she pushing Sara away.
Mostly that was because Laurel was just too stunned to move, but the terrible truth was part of her didn't want too. What was even worse was that her own body betrayed her, listening to that wicked desire deep inside of her and treacherously beginning to kiss Sara back, and the only thing Laurel seemed to do about it was whimper pathetically.
Sara was expecting Laurel to pull away, or at least not to kiss her back so soon. After all she more than anyone else knew just how stubborn and argumentative her big sister could be, it was what made her such a good lawyer, so it was only natural to assume that she'd have to break out her A - material to get this done.