[Hunter]

Originally Posted by Sethi

There's something i didn't understand in that explanation by Gai.

Spoiler:

Gai said that he trained in order not to look to Kakashi eyes however Kakashi can't perform Mange so why did he trained to avoid Kakashi eyes?

Spoiler:

Because the Mange isn't the only sharingan genjutsu, only the worst one.
Kakashi can hypnotyze his opponent as he did with Zabuza.