If your talking about the Manga, chapter 181, (The Battle Begins)
For Anime episode 109 an (invitation from the sound).
this episode is the saddest episode for me.
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No, till now in manga in chapter 496 sasuke has got even more evil and plans to destroy naruto and leaf village.
i think your mistaken, in that episode sasuke drops to the ground and does NOT kiss naruto, but takes his last look at naruto face to face before he leaves the village. with great pain he gets up and leaves. where ever you saw naruto and sasuke kiss was probably in episode 3 or 4, when it was just very funny, or it was altered by computer. OH I think that this person mean's a SasuNaru comic I think or it an episode of Naruto like I said I don't know.
Well I'm going out on a limb here but if Naruto dies and Sasuke destroys the leaf village I'm pretty sure, Naruto will no longer be alive and the leaf village will be destroyed
It's like 30 episodes long, starting when Naruto and Sasuke fought each other in the hospital to when Sasuke beats Naruto and leaves for Orochimaru.
If your talking about Tobi, who claimed he was madara, Then yes he is currently fighting him with Kyuubi Kurama's chakra, as of the latest chapter 596. Madara, however turned out to be dead, so tobi isn't Madara. (ch. 564 pg. 12)