You pick Gianty

...Gianty.

"I want Gianty as my instructor." you explain, getting a nod from the titular princess in return. Between the two, you were more interested in the talents of the human over the succubus. Not that Batty didn't have good points as well. It was just that Gianty's good points outweighed that of her wife's. "If you're fine with that, of course."

Gianty let out a giggle.

"Follow me, dear." Gianty explained, motioning for you to follow. You comply.