Breaking the Crystal Release

is episode 104 of the Naruto: Shippūden anime.

Synopsis
Team One continues to battle. Tobi decides to go seek the Three-Tails on his own as he had angered Deidara earlier. He discovers Team Three trying to seal the Three-Tails at the lake. Shino's bugs defeat Guren's crystal release, just as when Kakashi is about to deal the final blow, he is stopped by Gozu, who apparently dies protecting Guren. Team Two stops Rinji from interfering with the sealing team. Guren remembers she is the one who killed Yūkimaru's mother. Kabuto uses this fact to manipulate Guren.