Chi Ketsueki is of the Ketsueki clan. At a young age her clan decided that they wanted to join forces with the Uchiha, so they decided that Chi was to be wed to Sasuke. But before any decisions could be finalized the Uchiha murdered all of the Ketsueki and drained their special blood for their own use. Chi, who witnessed everything, had gone insane and made the decision to kill any Uchiha she came in contact with. Of course it would wait after her Kawaii-kun who she loved so much that she gave him her heart.
Gaara x oc fanfic