prettysoul777
The Winter Soldier, a ghost story, killed over 2 dozen people, not just any people, the higher ups, the top scientists, politicians, for a while worked alone, until The Winter Siren, she's the reason he gets to the higher ups. Killing the guards, people who are meant to be protecting some of the most influential, respected, controversial, powerful people in the world. It's an easy fight for her.
Both are simply assassins, trained to kill, trained to not have feelings, how long though until they feel something between them?