Naruto: Ascendant by Samurai101 (Rated T)

Pairing: None
Warnings: None
Site: FF.Net
Summary: Itachi's just died...and woken up thirteen again. The only problem is his thirteen year-old self doesn't like the idea of sharing his mind and body with his clan's killer. How hard would you fight to save your family from yourself?
Why I am recommending this: This fic is one of the best I've seen for the time travel trope. I'm breaking my resolution to rec only newer stuff with this, but if I'm going to do any super-popular older fic, it's got to be this one. It's not perfect, but the prose is clear, the stakes are very high, and it builds tension like nobody's business.

Ascendant