Title: Xander The Guardian of Innocents
Fandom: Buffy The Vampire Slayer
Disclaimer: I own nothing. I bend to Joss Whedon's will and try my best not to murder his characters.
Summary: After fighting off Spike and accidentally letting him get away with the gem of Amara, Xander finds that his destiny goes a bit beyond that of an average Scooby.
Warning: Cavewoman!Buffy in last part
You can find all the parts to the fic here