She's an ex-hydra Agent with a death wish. After years of being stuck with Hydra under their mind-control doing anything for them against her will, she finally escaped with one thing on her mind. 'I want to make the world a better place.' Natasha Romanoff, an ex assassin with many problems of her own, see's a potential in the Hydra Agent. She was the only one that saw potential. These two people come together to defeat a great evil and defy all of the odds stacked against them. Will they come out of it together? Pre Age of Ultron -> Post Endgame Natasha Romanoff x Fem!OC GxG