Mystic looks at her. His expression skeptical of her being like Arisu. For one Arisu didn't make him nervous. She didn't scare him like Rika did. It was his turn to be confused when she said her question and then started talking some more. Shaking his head. "Yeah. I live in the sea. Not true. The merfolk don't need gills to live under water. What do you mean something to breath with?" He asked in major confusion. "What is a city?" he asks cluelessly. He didn't like how she was looking. Nodding his head in agreement. "She is very nice. She is smart and beautiful." He says happily. Looking at her and moves to the pitcher finishing it off. He naively didn't know she was fishing for information.