The Phantom Rewrite (Black Widow x OC)

Damien is a weapon. He was born genetically mutated to be the perfect soldier but escaped from his life to hunt down every mafia boss he could get his hands on. But what will happen when he joins the Avengers? Will he become a symbol of justice or revert back into the murderer he once was?

This is a rewrite of my story The Phantom. I've grown a lot as a writer and decided to revisit it. One of the main differences is that it isn't a (Y/N) story anymore. This is mostly because typing out (Y/N) and all of the other things like (E/C) and (H/C) are annoying to do. Instead I've made an OC called Damien who basically takes on the exact same role that (Y/N) did in the original fic.
For the most part it should be the same story but with [hopefully] better writing and better storytelling.