The ninjas of the Hidden Leaf are being tested on their combat skills, and Team Guy must win a match against their sensei in order to pass.  Neji and Tenten succeed using their special moves, but how will Lee stand up to Guy-sensei's Morning Peacock?
You must understand 
why he was so strict.
En realidad entiendes el por que 
de su actitud estricta, ¿verdad?
Deberías entender por qué es tan estricto.
Você tem que entender por
que ele foi tão rigoroso.