Bucky has full sensation in his metal arm, and for a long time nobody knows that.
Tony notices that Bucky gets really tense and kinda freaked out when his arm is being worked on, and figures it's PTSD. But one day, he's repairing it and finds out/realizes that Bucky can actually *feel* the parts in his arm being cut into, etc and it hurts like hell.
Turns out Hydra conditioned him into just keeping still and quiet when his arm was being worked on, and Tony etc just assumed that a prosthetic arm couldn't feel and didn't think to ask. Bucky, on the other hand, assumed that Tony did know and was hurting him on purpose to get revenge (for the Winter Soldier having killed his parents) and felt like he deserved it. You know what they say about assumptions.
After they find out, the Avengers try to find ways to make Bucky's arm feel good.
This could be gen friendship fic, or slash (Steve sucking on Bucky's fingers, maybe?).
Gen or Steve/Bucky, Bucky has feeling in his metal arm
Tony notices that Bucky gets really tense and kinda freaked out when his arm is being worked on, and figures it's PTSD. But one day, he's repairing it and finds out/realizes that Bucky can actually *feel* the parts in his arm being cut into, etc and it hurts like hell.
Turns out Hydra conditioned him into just keeping still and quiet when his arm was being worked on, and Tony etc just assumed that a prosthetic arm couldn't feel and didn't think to ask. Bucky, on the other hand, assumed that Tony did know and was hurting him on purpose to get revenge (for the Winter Soldier having killed his parents) and felt like he deserved it. You know what they say about assumptions.
After they find out, the Avengers try to find ways to make Bucky's arm feel good.
This could be gen friendship fic, or slash (Steve sucking on Bucky's fingers, maybe?).