Their story starts from early childhood. Ayumi's parents were friends with the family Uchiha.
Ayumi friends with Sasuke and Itachi. A lot of time spent together. it made with Ayumi began a crush on his older friend. She was devastated when there was a mass murder of the Uchiha clan.
She didn't want to believe this with just Itachi all killed. She didn't believe his bad intentions towards the clan.

At age 16 she left the village and started life wanderer. After some time encountered Itachi and Kisame. It came between them to fight. Kisame miscalculated the strength to what Ayumi had. Through their skills she has been offered her a place among the Akatsuki.
In this way, she could be closer to his old love. Thanks Ayumi and Itachi approached each other.

Itachi uchiha - Masashi Kishimoto

Pose - Kate-FoX