User blog comment:CureKanade/Possible new Cure for Doki Doki!?/@comment-208.95.36.59-20130602143725/@comment-25249036-20130608182355

But in episode 19 I think, Regina's eyes were red O.O

And Ai-chan has same hair and eye color as Marie Ange, so I think:

Ace = Regina

Ai = Marie Ange

Hurry up episode 20! If Ace doesn't appear there, then that's a ruined birthday present for me D: