Board Thread:Naruto Discussions/@comment-4682609-20140806081616/@comment-25162548-20140807042011

Benknightprime wrote: I'm fairly certain that expire comment was relating to how the Mangekyou goes blind with usage, rather than the temporary thing. Granted I may be reading a bad translation. In Kakashi case, that comment about the Sharingan may expire is most likely referring to the fact that kakashi is a non-Uchiha. In the event that it did expire, he wouldn't go blind, he would just loss the ability to use the Sharingan. Knowing all this I think kakashi would start using a full blindfold to make it last longer, but because how uncool that maybe kishi might give him the ability to deactivate the Sharingan.