Kio was her neighbor when they moved to America. The two had been great childhood friends for a long time, but secretly she had been growing feelings for him. However, the strain of keeping her werecat heritage a secret from him was taking a toll on it, as she was aching to be more than just friends with him. Though she had finally managed to go on a date with him, under the condition that Anya would go out with Chris.
After he finds out she was a Werepanther and learned of her and Chaika's past, he openly accepted her, as he had already suspected that there was a werecreature in their neighborhood (which he mistook as a stray cat on the fence one night when they were kids.)