Before Haruka's mother was killed, her last request was for her daughter to go and live with her father. That request was fulfilled by her aunt who leaves Haruka with her father, Pein when Haruka's only three. But being the leader of the Akatsuki, a criminal organization, he's always busy and it doesn't seem like he wants to even be near her. Then, he makes the worst mistake he could and Haruka runs away from the Akatsuki. Fourteen years later, Haruka goes back to the Akatsuki to face her father once again when his words change her mind and brings her back to the criminal organization. Everything is perfect and peaceful for the Akatsuki. But when she spends time with Gaara and his family in Sunagakure, she realizes how lonely she is back home. And then she realizes that Pein plans to capture Gaara and extract the tailed beast from him. She steps in the battle between Gaara and Deidara but after something horrible happens.
Disclaimer: I do not own any of the characters or the setting of where this story is taking place, they all belong to Kishimoto, the original creator of Naruto Shonen Jump and Shippuden.