Natasha, Natasha Romanoff.

(Natasha×Fem reader)

When Y/N Stark wins the Stark apprenticeship to become an avenger, She isn't the only new one to the team. Yelena's sister, Natasha Romanoff (who's freshly escaped the red room) is sheltering at the avenger compound.

Will sparks fly? Can you trust the trained assasin? And what will happen when Dreykov comes looking for his own?