The Widows

Yelena Belova and Innessa Morozov grew up together in the Red Room. Once freed from Dreykov's manipulations, Natasha Romanoff finds them and they attempt to take him down together.
(at the beginning, the story follows pretty closely to the Black Widow movie and it's script but it will start to stray away from the plot/script near the middle)
DISCLAIMER: I DO NOT CLAIM ANY OF MARVELS CHARACTERS OR PLOTS