That's some amazing luck there, only tried 1 exclusive for the hell of it and just another generic R unique. Think it was Festa. Meh, have nearly an entire page of just Festas now...

As for Xmas Lisette, according to JP Wiki, she was released with Xmas Kotone, I'm not sure if she was gacha or not but I'm guessing so, so it is indeed strange. Some speculate it might be next weeks exclusive or something, since this is a 2 1/2 week event.