Electric Veins (джен)

The vibranium shield was Steve’s pride and joy. It was a symbol of protection, of justice, and it could smash its way through Nazis and aliens alike.
As it turns out, it could also smash through several layers of gold-titanium, and the human sternum, ribcage, lungs, and heart beneath it.
 
Steve kills Tony in Siberia, and the world is woefully unprepared when Thanos arrives not long after. As a last insult to the defeated Avengers, Thanos resurrects their betrayed and murdered former comrade, but his creation turns on him and defeats him. What’s left of the world celebrates, but damage has been done that can never be undone and Tony is… changed. Rhodey is determined to prove that it doesn’t matter: what makes Tony Tony is still there, and they’ll work through anything else.