"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. Worried that Sakura, having earlier stopped placing importance on her appearance by cutting her hair, may have surpassed her, Ino cuts her hair too. Ino uses her Mind Body Switch Technique despite knowing how inaccurate it is and that she will be left vulnerable 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. Ino having only pretended to use the Mind Body Switch Technique, she uses it again knowing it cannot miss. She gains control of Sakura's body.