I'd really like a version of the classic Bucky mistakes a young Pierce for Steve who then takes advantage of Bucky and rapes him story, but that explores how this fucks with him after returning to live with Steve

The way I imagine it'd go is that he doesn't immediately realize that this memory wasn't with Steve and was in fact of Pierce raping him. Maybe he brings it up to Steve who's like "what? That never happened." Or maybe he doesn't, but slowly starts remembering other details that make it impossible to have been anyone but Pierce. Whether he and Steve were together during and/or before the war, and whether rape by hydra agents was frequent or not is up to you, I don't have a preference. What I really want is the mind fuckery, not being sure what's true and what's not, and subsequent confusion about how this will affect his and Steve's relationship

+ flashbacks to the rape scene bc tbh I don't get tired of that flavor of trash