No, don't worry, this week's episode isn't the end of the Naruto Shippuden series - but it will definitely mark the end of an era!
Sasuke and Itachi have pushed themselves to the limits of their chakra after trading genjutsu, ninjutsu, and taijutsu for the last few episodes. Sasuke has broken through two of Itachi's three ultimate techniques, the Tsukuyomi illusion and the Amaterasu flame. Itachi in turn has managed to survive most of Sasuke's tricks, including Sasuke's trump card, Kirin. Now, Sasuke has to overcome Itachi's final Mangekyo Sharingan ability, Susano'o.
It's a battle of endurance - which wounded and exhausted ninja will prevail? And why does Itachi seem so much weaker than he has been before?
Find out on [http://www.sidereel.com/naruto_shippuden/season-4/episode-138 Naruto Shippuden Season 4, Episode 138: The End, which airs in Japan on Thursday night, December 3rd and will be simulcast on Crunchyroll on Thursday morning Pacific time!