Fallen Fang, Deranged Blossom

Naruto and Sasuke decide to settle everything, one last fight, and Sakura witnesses something that changes her. Kakashi wasn't there to help her and when he tries to find her after his mission, she goes missing, they search for her, find nothing and she is listed as a rogue ninja in the bingo books. She finally turns up but she isn't the Sakura they knew.