[quote=@AThousandCurses]
Damn, you're so good at world building Nanaya. 

So would Personal Barrier classify as a spell or a manipulation? 

Sorry for the redundanct question.
[/quote]

It would count as manipulation, for the standard ones being taught. Though some teachings would try to optimize their PBs by turning them into spells with additional added benefits, those variants would also come with rules and restrictions that make them less versatile than building one through pure manipulation.