Vengeance, and A Little Bit More (слэш)

To the group, to his friends, to his brother, he would issue warnings and caution. “Be careful,” he’d say, after weeks of ghostly presence and the phantoms that would follow him from room to room. His team would nod with determination, taking his words to heart, bleeding caution and a watchful eye—though Bucky, ever the one to flow against the stream, would walk away as if Steve had never said anything.
 
Or, Tony gives Steve a lesson in vengeance. It’s Poisonous.