~ Bucky Barnes x Reader ~ You are Tony Stark's sister. You never thought you'd have to spend much time with the man who killed your parents until you're forced to go on a mission with him, despite not even being an Avenger. What will happen when you're in danger? Will Bucky pull through for you or will he abandon you and leave you with Hydra?

Bucky and y/n POV As Tony Stark's younger sister you sure have his sarcasm and brains. Tony has kept you a secret to keep you safe from his enemies but has no choice to keep you close at the compound with the rest of the Avengers as terrorists have found out about you and attempted a kidnap to have leverage over Tony. It has become the Avengers mission to keep you safe and take down their organization. You grew up with Nat at your side as she trained you to fight in order to protect yourself. You get along with all the Avengers except one who thinks that protecting you is a waste of time and not his job. Will the mission fail because of one Avengers ignorance and hate towards you? Will the two enemies ever become friends? Or more? **COMPLETED**

Eight months after your last mission with Bucky, you've finally found your place among the Avengers. But just as you start to feel secure, Hydra resurfaces, and this time, they don't just take Bucky back under their control. They take you, too. Subjected to their experiments, you escape with something... different. Something powerful. Something you never asked for... But with Bucky still lost to them, you don't have time to question what Hydra did to you. You just have to fight to bring him home. But as the battle continues, one thought lingers in your mind: Did you truly escape Hydra, or did they change you in ways you can't undo? *BOOK 2* Sequel to 'Mark of the Star' so make sure you read that first! ~ Bucky Barnes x Reader ~