Kunoichi Rumble: The Rivals Get Serious!

is episode 41 of the original Naruto anime.

Synopsis
Kankurō easily wins his battle against Misumi by tricking him into attacking Karasu, Kankurō's puppet. In retaliation, Karasu snaps Misumi's neck, though he survives due to his ability to contort himself. The fourth match is between Sakura and Ino Yamanaka. After the two exchange insults, they decide to take the battle seriously.