The Hidden Leaf Village is holding a sports meet!  Lee is called upon to read the Athlete's Pledge of Fair Play, but screws up in front of the entire stadium.  Hoping to save face, he swears to outperform everyone at every event.  Will Guy-sensei's advice of "be confident and you'll win every time" awaken a well-intentioned demon within Lee?
Technically, I think Naruto was
the first one to break the rule.
Si mencionamos eso, creo que Naruto ha roto 
la regla en todo sentido de la palabra.
Siendo justos, Naruto fue el 
primero en romper las reglas.
Era, mas o Naruto quebrou a regra primeiro.