Oh wow I teared up a bit at “You’ve done well getting to where you are”. No one has ever really told Rei that. I kinda imagine that’s what his father could’ve said to him if he was still alive.
I’m sure they didn’t have any hidden motives but it’s quite clever to get Ishina back, since she’s now indebted to them. A new head maid would likely just look down on them.
He screams plot development. I’m guessing he has similar powers, or at least know someone who does. Also why impersonate sb to get a fortune if he’s not a bad guy??