the avengers took you away from hydra.you were tortured and trained as a assasin for 5 years each aka 10 years together and you was so aggressive they had to put you in a cage that way surrounded by indestructible glass,from how tortured you was you could have special abilities. You flinched at everything from trauma. You only trusted Bucky as you knew him from hydra. You was scared of cap because you recognized the voice from one of the torture rooms.

Bucky: “hello.”