Zen knew that this teacher in front of him has a past relationship with Alfonso, but he never expected that she knows his father personally.
"Of course. Your father is hard to forget when he's the most idiotic person I've ever known. And I'm guessing you're just like him." Keila still remembers the first time she and Zack met. She was so excited to meet Mary's friends and her expectation of how should she greet them, but Zack ruined her plan.
Whenever Zack sees a chance, he always teases her and fools around with her. She has such a traumatic experience with Zack to the point she doesn't want to see him even now.
She never imagined that she would see someone who has some features the same as Zack. She didn't mean it in a mean way, but looking at Zen reminds her so much why she dislikes hanging around Zack.