User blog comment:Curenatsuki/A New Character For Doki Doki?!/@comment-25249036-20130630121859

She MUST be Ace, because she is voiced by Rie-san.

So if it's true, then that's the full team of 5: Mana, Rikka, Alice, Makoto, Aguri!

Then again, we don't know if Cutie Madam is actually real yet...but that spot should be for Regina.