"Wow." Bruce shakes his head, and he thinks he's finally processed this enough and accepted him as Tony enough to move a little closer, pulling their joined hands into his lap as he leans against Tony's side. "He really knew how to hold a grudge, didn't he?"

But what he heard in there was something that he thinks Tony may have left out in the telling of everything else, and he looks at him carefully, eyebrow raised.

"What's that about a reversal serum?"