"Rivalry…!!" (拮抗…!!, Kikkō…!!) is chapter 72 of the original Naruto manga.
Sakura and Ino continue exchanging blows. Being complete equals, neither is able to gain the upperhand and both soon grow tired. Sakura berates Ino for being too focused on her appereance and beauty rather than her skills, and Ino apparently snaps at her insults, cutting her hair and throwing it to the ground. Apparently desperate, Ino tries to use her Mind Body Switch Technique to force Sakura to forfeit, despite knowing how inaccurate it is and that she will be left defenceless if she misses. Sakura dodges the attack and appears to have won, but finds that she is immobilised by the strands of Ino's cut hair, which have been infused with chakra to form a binding rope. Ino is revealed to only have pretended to snap and to use the Mind Body Switch Technique, in order to lead Sakura into the trap. She uses the Mind Body Switch Technique again knowing it cannot miss and succeeds on gaining control of Sakura's body.