This is not a random encounter, but no prep time either. Consider Itachi summoning Pein to come fight him in the same place where he and sasuke fought.
Now, assuming that Itachi is fully aware of how the Rinnegan works and does NOT have the use of Susano'o in this fight, who would win? (note: in this fight Itachi does not have the disease that killed him, which has not been speculated in the manga yet) I'd honestly like to see this one...
Post Edited:2008-06-02 08:59:10