Battle Formation: Ino–Shika–Chō!!

is episode 33 of the original Naruto anime.

Synopsis
Team 10 battles the Sound Genin, and Ino possesses Kin Tsuchi, rendering both of them unable to fight. However, the Sound Genin still manage to hold their own. Just as Lee's teammates appear to join the fight, Sasuke awakens, the cursed seal given to him by Orochimaru engulfing him. Noticing Sakura's wounds, Sasuke begins attacking Zaku in retaliation, eventually breaking both of his arms. As Sasuke turns his attention to the final Sound Genin, Dosu Kinuta, Sakura thinks to herself that this is not the real Sasuke and that he is somehow possessed. She then runs to him and embraces him. Sasuke's curse marks disappear and he falls to the ground. The terrified Dosu then leaves their scroll and retreats, vowing to be back.