(A/N: 2nd request from PikachuLover1996. Hope you guys enjoy it.)
Everyone knows about the famous Elric brothers, but there's something that they didnt know not even the Elric bros. They had a sister.
~~~~~~
Another day traveling, hitting shops, resting, and taking down criminals when Roy Mustang needed.
The normal life that the Elrics have come accustommed to, they were staying in a hotel for a bit taking a break from their journey.
~~~outside the hotel~~~
You were an alchemist as well, known as the "Seductive Viper". You would lure criminals in with your looks and flirtatious attitude then would round them up w/ ease.
Night began to fall and you were assigned to capture a criminal that would lead women from bars to alleyways then kill them.
You were your usual attire just without your trench coat to show off your body, you had a drink and got to work.
Little did you know, Ed and Al were assigned to this case as well. They waited out in the alleyway, the criminal was apparently powerful as well as deadly.
The guy noticed you and smirked, he licked his lips hungrily and walked over to you.
"Hey sweet thang, mind if I buy you a drink?" He said smoothly.
You batted your eyelashes and smirked, looking him up and down.
"Buy me a drink? Lets see. Only if youll have one with me."
The guy smiled and ordered 2 shots, you and him both drank it down. After about 20 minutes, he was touching your thigh. Though on the inside you wanted to chop his hand off, but you just giggled at the feeling and whispered into his ear seductively.
"Why dont we get out of here? And ill give you a little present~"
You voice laced with lust, rang through his ears. You smirked and walked out of the bar, feeling him stare at your backside. He followed you into the alleyway where the Elric brothers were, as soon as the guy saw them he pulled out a knife and held it against your throat.
"Let the lady go and make this easy."
"No! You stay there, then me and here are gonna have some fun."
You sighed in annoyance and rolled your eyes, you blew a kiss at the Elrics causing them to blush and freeze.
You snaked your hands around the guy's neck and used your claws to dig into his skin and paralyze him.
You yawned and stretched, then picked the guy up and handcuffed him.
"Alright buddy, youre under arrest for all 10 murders of Marie, Anna, etc."
You sat the guy up against the wall, then looked towards the Elrics. Youre eyes brightened with joy, Ed had grown although he looked like he was 16. You knew what happened to Ed and Al, it broke your heart to stay away.
You walked up the Elrics and carressed Ed's pink tinted cheek and Al's metal one. They both unfroze and stared at you with wide eyes, their eyes scanned your body.
"Hey boys, my eyes are up here." You giggled.
Making them blush more, you smiled at them.
"S-so, what d-did you t-t-to him?" Ed stuttered.
You giggled at his stuttering.
"Well, I-"
"Viper."
You were interrupted by none other than Roy Mustang, you looked at him and waved.
"He's all ready for you. Although, he is paralyzed."
You said glancing at the limp body.
"Good work Viper, I see youve met the FullMetal Alchemist-"
"Edward and Alphonse Elric. I know everything about them."
"How is that possible?" Alphonse said.
"Well, I'm actually your sister."
Ed's jaw dropped and started flipping out.
"How the hell are you our sister?! I dont remember you! Where were you when mom died?! What happened to you?! Why dont you seem famiar?! Where were you all my life?!"
You sweatdropped and put your hand on Ed's cheek, he froze and deeply blushed at how close you were.
"Uh...uh..." he was speechless.
"Are you calm now?"
He nodded and you smiled, I'll explain everything to you guys over dinner. Im starving."
~~~time skip to were you finish explaining your background bc im lazy~~~
"So, that leads us to right now." You said.
Both boys were shocked, you then got up and stretched.
"Well, lets get some rest. Got a big day ahead of you."
"Huh?" Both Elric boys titled their head not understanding.
"Hm? Oh! Im joining you guys on your journey to find the stone."
You then began undressing, Ed frantically covered his eyes and Al looked away.
"What the hell are you doing?!"
"Im getting ready for bed, I dont like sleeping with clothes on."
After saying that, Ed peeked between the cracks of his hand and checked you out. He blush darkened and he started having a nose bleed.
You hopped into bed and fell asleep instantly, Ed and Al looked at each other. Ed then got into the separate bed as Al kept watching over you and Ed.
~~~time skip again to after Ed and Al find the stone~~~
Over the years, you have grown found of Ed and Al. The problem was you started having feelings for them more than a sister.
It was border you didnt want to cross, but you couldnt deny your desire for them. Especially, Ed.
Winry always came over and tried to steal Ed away, lets just say werent to happy about that. So, you did what would be expected of jealous viper.
You knew Winry would come over in a few minute, she always came over at the same time. 3:30pm. You and Ed were sitting on the couch and it was 5 minutes til 3:30, you used alchemy to seduce Ed a little bit.
"Ed~" you purred in his ear.
His face flushed and turned as red as his coat as you got closer, you made him stand up and walk towards the door. You motioned for him to come closer, making him pin you to the wall. 2 more minutes.
You looked into his eyes and kicked your lips, capturing your lips in a deep and passionate kiss.
Winry came in a second after Ed kissed you, his eyes were closed and paid no attention to Winry. You opened your eyes and looked towards Winry, smirking into the kiss then wrapping your arms around his neck adding some tongue into the kiss.
Winry slammed the door shut and Ed pulled away leaving you both panting for air.
"W-what did I do?"
"You kissed me. I love you Ed, not in a sibling way. I love you as in I want you to be mine, I want to be your lover."
Ed blushed and smiled, he then nodded and kissed you again. Pulling away slightly and whispered in your ear.
"I love you too, (Y/N)."
You smiled as both you spent the rest of the day making out like your lives deepened on it.
