Does kakashi really get killed by pain? Naruto...

Pain, Yes, pain kills Kakashi Sensei but towards the end, naruto
changes nagato and nagato uses his life and death power to bring back
the characters that have been killed in the battle.

http://www.youtube.com/watch?v=yhdY0WU-2QA

Read the comments,

Killed by pain and then revived again. So, don't worry. Kakashi-Sensei
is the cool guy who will become the Hokage.

http://www.youtube.com/watch?v=jFEsqAvQ0l4