Everyone knows the famous Natasha Romanoff but only as a soldier. Not many people know what happened in the battle against Thanos but how could she forget. She lost her best friend. It took Natasha some time to put herself back together again and when she did there was nothing left for her to do other than to go work for Fury again. (Y/n) (L/n) aka Doctor Poison. No one's ever seen her face or even knows her real name. Not even her previous boss's, not that they could talk anyway since she killed them. Y/n uses a variety of different poisons on her victims, hence her name, but her favorite is Deadly Nightshade. Unfortunately, she's now retired and has given up her ways of violence. But Fury has other plans because he knows everything. What will happen when the two ex-assassins meet? Will they fall into hate? Will friendships bond? Will they fall in love? Or all three? The name Doctor Poison belongs to me, you own your name and the rest of the characters belong to Marvel. Rankings🥇- As of July 2nd, 2021, #1 in #natalierushman #9 in #femreader #11 in #×reader #20 in #natasha #43 in #endgame