The world comes first (Natasha Romanoff x fem Y/N)

Y/N and Natasha both grew up in the red room. Y/N hasn't seen her since she escaped to go fight with the Avengers. Her and Yelena were best friends, but it has been a long time and a lot has happened since Natasha decided to leave the red room behind. What happens when one day Y/N gets captured by the Avengers and tu...