Jesus Tsukamoto, everybody knows that cats use their ears as a crucial tool for non-verbal communication. Catgirls use their human ears to hear but retain their feline ears as vestigial tools for signaling their moods to one another and to anyone who cares enough to learn how to understand them, as you'd know if you'd done even the most basic research into catgirl lore.
I thought this girl was supposed to be the smart one, but here she is bombing on even the most basic catgirl facts while Kenzaki's upstaging her by rubbing both her remaining brain cells together hard enough to have a Sherlock Columbo Clouseau moment. Shakin' my head so hard right now.