Nightmares

Sakura is sent to the sand to teach young shinobi the healing tactics of the leaf, in a time of war it is necessary to share jutsu's. She is also there to train with Temari, who is teaching her to use physical strength instead of chakra- inhanced strengh all the time. But as Sakura gets to know the sand siblings, she starts falling for the Kazekage. And a certain group of very powerul ninja disaprove of the relationship between the villages.

(I'll try to keep it as child-friendly as possible, and no, the group is NOT the akatsuki.)