After the events of Hawkeye 1x06. The night before Yelena was standing in the middle of the ice rink, getting herself ready to finally get justice for her sister. The next day she was celebrating Christmas Day at Barton's house, watching how a little kid came running to them wearing her first vest.

My Idea how Natasha found her way to S.C.H.I.E.L.D. (Not based on the comics, but tried to follow informations from the MCU, but maybe still some changes. Don't know if I got all hints right. By the way I am not native speaker. But if you like to give advice for grammar and other stuff. You re welcome.)

Yelena visits her parents, but everything reminds her of Natasha. Post Hawkeye finale.

Y/N and her new mission partner go to a difficult one, where she gets injured.

General Ross has Natasha cornered. She is willing to do whatever it takes to escape, and he is determined to stop her. As the game takes a dangerous turn, Natasha realizes that she's hit a dead end. Meanwhile, if Natasha is to survive, other members of the Avengers will have to sort through their differences and learn to work as a team. Again.

Melina can't stand his big glasses, bad dad jokes, terrible English, shuffling bear walk, and tiny capacity to comprehend anything remotely related to science. But it's exactly these things that make her fall hard for him. [Oneshot, Melina x Alexei]

It's simple, but it's what her sister deserves; peace. It's not much, but it's what she deserves; a chance to say goodbye. (A post-Endgame Black Widow One-shot).

Yelena comes home with a new purchase: a green vest with pockets. LOTS of pockets. But she also has a big project for school tomorrow, but she can't remember where she put it! (WidowFam AU)

When Ali decides to go and find her mum she not only gets ropped in with the mission of taking down the red room but also finds out more about her past than she thought that she ever would.

Takes place before the movie,Yelena has a nightmare and Natasha is here to comfort her

Because sometimes a baby sister might need some help from the cool kids (or vice versa) (Natasha&Yelena, background Alexei/Milena)

Even in the Red Room, Natasha was a "poser." Even in the Red Room, Yelena liked to point out that she was a "poser." (OS)

Oksana frees her in Morocco. Yelena draws the other remaining Widows to her.

In 1994, Melina agrees reluctantly to taking Alexei and the girls out for trick-or-treating.

Yelena buries her sister with blood money.

Yelena and Mira have a close friendship. They have their own movie nights and quiet moments. Everything is revealed during a night of hot chocolate, movies and cuddles.

Nat and her sister haveing “fun” with each other. (More one shots wil be added. Requess are welcome.)

When Natasha gets home from a long Avengers meeting, she is worried about Yelena because Yelena did not ask to come as she usually does. However, as soon as she walks through the front door, she quickly figures out that Yelena is more than okay...

It is October, and Yelena very skillfully tricks Natasha into pulling over into a haunted house parking lot. After much begging and guilt-tripping and convincing, Yelena manages to get Natasha to agree to go inside of the place. Needless to say, the visit is quite eventful.

When Yelena wakes up feeling less than wonderful, she tries to hide it from Natasha. However, Natasha quickly catches on, and Yelena has no choice but to allow her big sister to take care of her.

' i know it's long gone and there was nothing else i could do ' / / yelena belova thinks october might be her favorite month.

When Antonia Dreykov shows up at Natasha and Yelena's doorstep wanting to talk to Natasha, she is welcomed with open arms. However, Yelena is slightly less enthusiastic when Antonia ends up staying for a week and starts taking all of Natasha's free time.

Assassins don't get nightmares. Right? Natasha had nerves of steel. Right? Yelena and Natasha angst and fluff. Nightmares and short-lived violence.

"It's going to be one hell of a reunion." "You think?" Surrounding the events before, during, and after the 'Black Widow' film! (YelenaxOC)

When Yelena is bored one day, Natasha asks Yelena to lay her head on Natasha's lap. Yelena is confused until her sister introduces her to a gentle activity that fully satiates the touch-starved beast within Yelena. Just innocent sister fluff.