The Burden

As Kakashi finds Sai and others while heading towards her, Sakura finds herself being tested by Sasuke when he reveals his new ambition is to slaughter everyone in the Hidden Leaf Village and requests proof of her loyalty to him by killing Karin. Sakura attempts to carry out the deed when Karin indirectly reveals Sasuke is about to kill her. But Kakashi intervenes with a slight advantage as Sasuke begins to suffer the blindness from using the Mangekyou Sharingan. Sakura, spiriting Karin to safety to heal, attempts to attack Sasuke from behind with a poisoned kunai. But Sakura's last second hesitation enables the blind Sasuke to grab the weapon from her, the girl only saved from certain death when Naruto takes the stab meant for her.