*character death*
-y/n pov-
As i was packing up the house the door bell rang so i ran to the door. When I opened the door i saw it was Janet and Jeff and not gonna lie they looked a little sus, "hey you guys what's up" Janet smiled before replying "well we saw the for sale sign outside and wanted to come see why you were moving and maybe help you back a bit" after she said that i looked behind her and saw there was already a sign out front dam shield works fast "oh um Natasha got a job offer in Brooklyn so we are moving there and that would be a great help come on in nat isn't here she had to run out" they came in and shut the door locking it on the way in not a good sign "good you are alone now what have you betrayed us what are you doing" i look at her confused "um I'm really sorry we are moving but i don't think that classifies as betrayal" i laugh nervously which does not help since Jeff moves closer "you know what we mean shadow why did you leave hydra you know what happens when you try and escape bad things happen" shadow oh no they must have did this just to get me back in the grip as i was thinking on what to do i felt a pain in my neck and I started to get sleepy "don't worry shadow we will get you back to your good self real soon" and with that i blacked out.
When I came to i was strapped to a metal bed thing in a dark room. No no no not hydra how did they even find me i was doing so good and they are gonna turn me bad again. Without me noticing Jeff came in with a smile a sinister smile of course the first time i see him smile ever it's that kind of smile. "Well look who is awake our little shadow solider now here is the plan we have a serum that will remove your memories of everything untill you finish your mission then once you have completed it all of your memories and I mean all of them will come back and you will have to live with what you have done and when you get cast our and crawl back to us we will being you in with open arms and severe punishment" after that he walked over to me and injected me with something again this time i was in intense brain it felt like my brain was on fire then i blacked out.
I woke up in a strange room where was i? "Solider are you ready for your mission" mission um oh right mission "yes" the man smiled "you are to go back and act like nothing has happened pretend to be the avengers friends and pretends to love Natasha and then when she least expects it kill Natasha" i nodded and he let me out of the straps leading me to the house to keep packing as he told me to do. Since i can't remember anything which they told me was because i hit my head so I could remember what my mission had been so he would have an ear piece so he could tell me what to do.
-nat pov-
Fury had me come to give a mission report and ask about our relationship to make sure we don't still want to kill each other then sent me back to pack. When I got home y/n had gotten pretty much everything packed and just needed help getting the stuff in the van. "Hey y/n can I ask you something before we pack up the van" it took her a second but she turned around "ya sure what's up Natasha" Natasha she has literally never called me Natasha is she mad? "Um i was wondering if you maybe wanted to be my girlfriend" she once again hesitated before replying what is going on "i would love that Natasha Romanoff my girlfriend what an honour" ok good it doenst seem like she is mad so i smiled at her then gave her a kiss "cool then we should start putting everything in the van" she gave me a thumbs up then we packed up the car.
It took us a few hours to get back so i put on the playlist that y/n always dances to which is so cute but for some reason she didn't dance she didn't even tao her foot whatever.
We made it back in record time and started unpacking and saying hi. I asked Jarvis to bring everyone into the living room for a bit announcement. "Ok me and y/n have brought you here because" Clint cut me off "because you are dirty little animals and you guys fucked ya we can tell you didn't hide the hickeys" i stood there in shock when y/n replied "yep and we are dating now that you know imma go unpack see ya" want the hell she is never like that what happens when I was gone. "Does anyone else think y/n is acting weird even tho you guys just saw her" i asked the group " ya she definlty is she would never act like this did something happen" i sigh in frustration "not that i can think of we were so good this morning but after i came back she was acting weird what if i somehow did something wrong or she regrets what happens and only said yes to us dating in pity" Clint hugs me "hey no don't think like that she is probably just tired we will figure out in the morning also good job girl."
-y/n pov-
It was almost time to go to bed and I had a plan to kill Natasha. So i started putting it into action walking to her room. "Hey um i was wondering if i could maybe stay with you tonight we have been sharing a bed for like a month or so now and I don't want to sleep alone" she smiles and pats the bed beside her "of course come cuddle". I walk over and get i to bed hiding my dagger but keeping my hands on it. We talk for a it but then she kisses me to say good night and we lay down to sleep but i get up and lay over her straddling her and go down as if to kiss her "well then you want round two princess she smirks" i smirk back and lean down to kiss her when I pull my dagger out and slit her throat then blacked out.
I woke up and looked around no no no want did i do then my head feels like it's ready to blow up as all my memories come back and I scream in agony. The door flys open Clint running in but then stopping in his steps "y/n what the hell happened in here" i look at him confused but then he runs over to the bed and I see nat lying there throat slit blood everywhere and she is unconscious. "No no no nat i fuck you hydra fuck you i just got my shot togjeter" Clint was screaming for help but i didn't notice i just sobbed in the corner as they brought her down to med bay leaving me alone. An hour later Clint came back up and walked over to me "please please tell me you shaved her because i can't live with myself if she died and it's all my fault please Clint" he sat down beside me and tried to hug me " no no I'm a monster don't fucking touch me you should have just gave me back to hydra or killed me when you found me then you would still have nat and I wouldn't have ruined everything" Clint puts his hands up then sits across from me "ok y/n i won't touch you but you need to tell me what happens" i look down and explain everything to him and cry. Natasha is dead and it is all my fault
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"So pretty much she came back Janet and Jeff came over and tricked me sedating me then putting a serum in me that Jeff said would take away my memories until i finished my mission then every single one of my memories would come back and I would have to live with whatni had done. He told me to go back and act normal which i tried to do but i couldnt rmeebr anything so it was hard but they had told me my mission was to kill her and that's where we are Natasha is dead and it's all my fault and im so sorry and I know that will do nothing but" tony cut me off "y/n stop we know it wasn't you it was hydra who killed Natasha we aren't gonna punish you we are gonna end hydra in honour of Natasha" i shook my head "no no i killed her it was me and I killed so many other people i rmeeber it all every single one of them" Clint gave me a hug "and that's why we are going to take hydra down to make sure they can't hurt anyone else but we can't do it without you please y/n we don't blame you and I can't loose both of my best friends please" Clint was now crying "fine but when I'm done i will leave" Clint looked down sad "fine but first let's go safe the world from hydra"