Lucifer is talking with Charlie. Charlie is pitching an idea to him about a trust exercise, and he's zoning out. Then, Lucifer notices Y/N... With a tail. His eyes widen, gaze completely focused on the tail. He never realized it before. He couldn't help but think of how soft it looked, and how much he wanted to touch it. Maybe that was a sensitive part for Y/N? Now, Lucifer's attention was completely focused on the tail, not even bothering to hide his fixation. Charlie started asking if he was paying attention, and she was slightly annoyed with how obvious he was acting, how he couldn't focus on her when she spoke.