Sasuke sees Naruto's Nine-Tailed fox seal, and wanted to know what it is. Of course, this sends Naruto into panic. Will he lose the two friends he has? Do the Akatsuki have an entrance? What does Sasuke do? Set in the early Naruto series, but based of events towards the end (not shippuden). Only rated because that is what Naruto is rated. First real story.