Femme Fatale (Bucky, Peter, Loki, Pietro, Wanda, Yelena soulmate story)

Katherine Rogers-Black was taken by hydra at the age of seven, her mother had just died in a freak accident and her father didn't know she existed.

She was the product of a one-night stand between Steve Rogers and her mother, Elizabeth Black. after being tested on by hydra for nine months, she gains abilities and is saved by a mission run by Peggy Carter, who later became her adoptive mother, she has worked with SHIELD ever since.

When capsicle is unfrozen and the avengers are formed, agent Coulson decides she needs more human contact. She joins the avengers but would rather stay in her room reading and listening to music. When an icy soldier, a teenage arachnid, a mischievous god, a blue blur, a witch from sokovia and a spicy Russian show up, who will steal her heart? Will they all win a piece or will she only choose one?