Past [Supernatural x Reader x Avengers]
Y/N was a well known hunter in the supernatural world, she was strong, fierce, an amazing fighter and research. She was also very beautiful. She was also known for living with the Winchesters most of her life, after her parents was killed by a demon when she was 14. John took her in as his own and raised her along with Sam and Dean. After Sam left for Stanford, the two Winchester and Y/N continued hunting. A few months after Y/N turned 18, she left and quit hunting.
She moved to New York. Many things happened, and now Y/N was an Avenger. Fighting along her new family and friends. She was happy, although she was still fighting, most of time she didn't have to worry much about supernatural creatures, because they were a lot harder.
One day, Y/N got an unexpected call from Sam, telling her that a hellhound killed and took Dean's soul. What would Y/N do now?