Shadows House, Vol. 3 (manga)

Within a mysterious mansion, enigmatic nobles known as the Shadows employ living dolls to act as their "faces." Kate and Emilico are one such intended pair, but before Emilico can claim the title of Kate's face, they must first pass the debut. With ambiguous rules and a hostile moderator, will the bond between the two be strong enough to overcome all odds and survive the debut?!