@Corus
No, it's not in the LNs. Alot of things are vaguely hinted in the light novels, but the manga takes things a step or 2 farther. For example, neither the kizumonogatari LN or movies ever touched upon dramaturgy's back story, but it may have been mentioned in later novels.
Wait, I thought this whole arc was a flashback telling the story of kiss-shot, everything would be before araragi met senjougahara. I'm really confused now :/
@Saamok Yes, it is a flashback, but the narrator is Araragi from the future, so he's speaking like he's telling a story (I suppose this is about the Mayoi thing he says?).