Ch 1 - mask destroyed

(This story is on hiatus as I don't really have inspiration for it, and I don't even know where I was going with it to begin with)

What would happen If Obito lost his memory due to the giant rock that crushed him and therefor didn't know better than to follow Madara's plan-

What happens when he stumbles into Rin only moments before the Uchiha massacre - how does she know him when he dosn't even know himself?
AU
(ObiRin)