Booker didn't know how he would describe the newly-named Casey. He loved her personality and looks, like the image was taken from his own head, but he didn't know what to classify her as. She was definitely his friend, but just calling her a friend didn't seem to do any good for him. She was four years younger than he was, and although he enjoyed her company a lot, having her act as a girlfriend or lover just didn't seem right. She was young and filled to the brim with energy and curiosity about the world. It was like she had become the little sister that he had always wanted. He liked the sound of calling her his little sister for the time being, and he was sure that she would be happy to be called that as well. He smiled at her as she danced around him.

He laughed a little as he thoroughly enjoyed her energy and nodded to her slowly. "Yes, Casey. We're going to go and explore. Come on, let's go and have a nice walk around our part of the city." He smiled at her kindly and motioned her to the door as he simultaneously walked over to it and held it open for her, silently telling her to walk through so that could get going.