Catara

Catara is an exclusive girl available as a DLC bundle that can be purchased for $5. She is the twenty-ninth girl in the game's main tab, but she is not part of the main story and you do not need to unlock any other girls to obtain her. Along with her purchase, you'll unlock a new game mechanic called "Speed Dating". This allows you to instantly fill Gift and Date requirements at the press of a button, provided you have enough money/time blocks available.