Only my beginning: Natasha Romanoff x fem reader

You are Tony Stark's latest recruit in his plan to protect the world, and as the youngest and smartest Harvard graduate you are the perfect choice. But that's not the only reason he chose you. Unbeknownst to you, you have a secret that Tony believes he can unveil and help you with.
Set on your plan to help Tony, you don't allow yourself any distractions until you start to get to know someone you thought would never open up to you, or anyone.

A slowburn, Natasha Romanoff x fem reader. Sticks loosely to the events of the Avengers but some details may be out of place so the story flows better.