Card Rulings:Moonlit Princess, Kaguya

Yes. No it does not, as locked cards are not considered units. No it does not, as Protect markers are not considered unit cards.
 * Does riding a vanguard count towards this unit's skill?
 * Does placing a card on (RC) as locked count toward this unit's skill?
 * Does placing a Protect marker on (RC) count towards this unit's skill?